HELP I NEED THIS NOW I HAVE 5 MINUTES LEFT AND 5 MORE QUESTIONS!!

The magnitude of the x-component of this vector is 9.05m.

The angle of inclination of the vector is calculated as;

θ = 90 ⁰ - 48.4 ⁰

θ = 41.6 ⁰

The magnitude of the x-component of the vector is calculated as;

Vx = 12.1 m x cos ( 41.6 )

Vx = 9.05 m

A vector can be represented by an ordered set of numbers, called components, that indicate the magnitude and direction of the vector in a particular coordinate system. The components of a vector can be added or subtracted using vector addition and subtraction, and multiplied by a scalar (a real number) using scalar multiplication.

Vectors can be visualized as arrows in a two- or three-dimensional space, where the length of the arrow represents the magnitude of the vector, and the direction of the arrow represents the direction of the vector. Vectors can also be represented as matrices, which can be used to perform various operations on vectors, such as dot product and cross product.

To learn more about Vector visit here:

brainly.com/question/29740341

#SPJ4

Complete Question:-

The corresponding probabilities are: A. P(R) = 0.72 B. P(R') = 0.28 C. P(A ∩ R) = P(R) * P(A | R) = 0.72 * 0.51 = 0.367 D. P(A | R) = 0.51 E. P(A ∩ R') = P(R') * P(A | R') = 0.28 * 0.10 = 0.028 F. P(A' ∩ R) = P(R) * P(A' | R) = 0.72 * 0.49 = 0.352 G. P(A' ∩ R') = P(R') * P(A' | R') = 0.28 * 0.90 = 0.252

(a) The tree diagram with the corresponding probabilities is:

A (0.51) A' (0.49) A (0.10) A' (0.90)

(b) The proportion of students who earn an A and don't attend class regularly is:

P(A ∩ R') = 0.028

(c) The chance that a randomly chosen student will earn an A in the class is:

P(A) = P(A ∩ R) + P(A ∩ R')

= 0.367 + 0.028

= 0.395

(d) Given that a student earned an A, the chance they attend class regularly is:

P(R | A) = P(A ∩ R) / P(A)

= 0.367 / 0.395

≈ 0.9291 (rounded to four decimal places)

To know more about proportion,

https://brainly.com/question/31010676

#SPJ11

Complete question:

A professor has noticed that students hat attend class regularly, mss no more than two classes per term, generally get better grades. For he class, the overall percent o students who attend regularly s 72% or those who come to class on a regular basis, 51% receive A's. Of those who don't attend regularly, only 10% get A's. (b)Among all students what proportion earn an A and don't attend class regularly?

Answer:

18

Step-by-step explanation:

The range is the biggest number minus the smallest number.

The biggest number is 12.

The smallest number is -6 .

Range = 12-(-6) = 18

The probability that an incoming call to the customer service center will be from a customer who is either moderately satisfied or very satisfied with the service given by the call center is 0.480 or 48.0%.

To find the probability that an incoming call to the customer service center will be from a customer who is either moderately satisfied or very satisfied, we need to calculate the probability separately for each district and then sum them up.

Let's denote the events:

M: Call from a customer who is moderately satisfied.

V: Call from a customer who is very satisfied.

We are interested in finding P(M or V), which is the probability of the event M or the event V occurring.

For District A:

P(M) = 33%

= 0.33

P(V) = 11%

= 0.11

For District B:

P(M) = 34%

= 0.34

P(V) = 20%

= 0.20

Now, let's calculate the probability for each district by considering the proportions of calls from each district:

For District A:

P(A) = 60%

= 0.60

For District B:

P(B) = 40%

= 0.40

To find the overall probability of a call being moderately satisfied or very satisfied, we can use the law of total probability:

P(M or V) = P(A) * (P(M) + P(V)) + P(B) * (P(M) + P(V))

P(M or V) = (0.60 * (0.33 + 0.11)) + (0.40 * (0.34 + 0.20))

Calculating the values, we get:

P(M or V) = 0.60 * 0.44 + 0.40 * 0.54

= 0.264 + 0.216

= 0.480

Therefore, the probability that an incoming call to the customer service center will be from a customer who is either moderately satisfied or very satisfied with the service given by the call center is 0.480 or 48.0%.

To know more about probability visit

https://brainly.com/question/32004014

#SPJ11

In the consolidated financial statements, the intercompany sales between Perez, Inc. and Senior, Inc. need to be eliminated to avoid double counting of the profits.

When Perez, Inc. sells goods to Senior, Inc., the intercompany sales should be eliminated in the consolidated financial statements. This means that the revenue and cost of goods sold related to these transactions should be removed from both companies' individual income statements.

Since Perez, Inc. sold goods with a 40% gross profit to Senior, Inc., the gross profit on these intercompany sales needs to be eliminated. This adjustment ensures that the consolidated financial statements reflect only the external sales and expenses of the group as a whole.

Furthermore, as Perez, Inc. owns 80% of Senior, Inc., the consolidated income statement should also reflect the portion of Senior, Inc.'s income that belongs to the non-controlling interest (20% ownership not held by Perez, Inc.). This adjustment ensures that the consolidated financial statements accurately reflect the economic interest of both the parent company (Perez, Inc.) and the non-controlling interest (the remaining 20% ownership in Senior, Inc.).

Learn more about profits here:

https://brainly.com/question/32381738

#SPJ11

erez, Inc., owns 80% of Senior, Inc. During the year just ended, Perez sold goods with a 40% gross profit to Senior. Senior sold all of these goods during the year. In its consolidated financial statements for the year, how should the summation of Perez and Senior income statement items be adjusted?

The area enclosed by the curve x = t^2 − 3t, y = √t and the y-axis is 2.08 square units.

We have been given parametric equations x = t^2 − 3t, y = √t

We need to find the area enclosed by the curve x = t^2 − 3t, y = √t and the y-axis.

Consider x = 0

So, t^2 − 3t =  0

t(t - 3) = 0

t = 0   or  t = 3

Let f(t) =  t^2 − 3t and g(t) = t

Differentiate the curve f(t) with respect to t.

f'(t) = 2t - 3

NWe know that the formula to find the area under the curve.

A = ∫[a to b] g(t)f'(t) dt

here, a = 0 and b = 3

so, A = ∫[0 to 3] √t (2t - 3) dt

A = ∫[0 to 3] (2t√t - 3√t) dt

A = ∫[0 to 3] (2t^(3/2) - 3t^(1/2)) dt

A = [4/5 t^(5/2) - 2 t^(3/2)]_[t = 0, t = 3]

A = 4/5 3^(5/2) - 2 3^(3/2) - 0 + 0

A = 4/5 3^(5/2) - 2 3^(3/2)

A = 6√3 /5

A = 2.08

Therefore,  the area of the curve is 2.08 square units.

Learn more about parametric equations here:

brainly.com/question/28537985

#SPJ4

As per the question, All four students A, B, C, and D are loss-averse over money and have the same value function as below:v(x dollars)={√x     x ≥ 0   {-2√-x  x < 0They are also loss averse over mugs and have the same value function.

v(y mugs)={3y y ≥ 0
        {4y y < 0
Now, we have to find the values of a, b, c and d as below:
- Student A owns a mug and is willing to sell it for a price of a dollars or more. i.e v(a) = v(0) + v(a-A), where A is the initial endowment of A. According to the given function, v(0) = 0, v(a-A) = 3, and v(A) = 4.
So, a ≥ A+3/2
- Student B does not own a mug and is willing to pay up to b dollars for buying it. i.e v(B-b) = v(B) - v(0), where B is the initial endowment of B. According to the given function, v(0) = 0, v(B-b) = -4, and v(B) = -3.
So, b ≤ B+1/2
- Student C does not own a mug and is indifferent between getting a mug and getting c dollars. i.e v(c) = v(0) + v(c), where C is the initial endowment of C. According to the given function, v(0) = 0, v(c) = 3.
So, c = C/2
- Student D is indifferent between losing a mug and losing d dollars. i.e v(D-d) = v(D) - v(0), where D is the initial endowment of D. According to the given function, v(0) = 0, v(D-d) = -3.
So, d = D/2
2) In this case, value function for money changes to:v(x dollars)={√x     x ≥ 0
            {-√-x   x < 0
However, the value function for mugs remains the same:v(y mugs)={3y y ≥ 0
         {4y y < 0
Therefore, values for a, b, c, and d will remain the same as calculated in part (1).
3) In this case, students are not loss-averse. Value function for money:v(x dollars)={√x     x ≥ 0
            {-√-x   x < 0
Value function for mugs:v(y mugs)={3y y ≥ 0
The reference point is the status quo, i.e initial endowment. So,
- Student A owns a mug and is willing to sell it for a price of a dollars or more. The value of mug for A is 3 initially and he would sell it for 3 or more.
So, a ≥ A+3/2
- Student B does not own a mug and is willing to pay up to b dollars for buying it. The value of mug for B is 3 initially and he would buy it for 3 or less.
So, b ≤ B+3/2
- Student C does not own a mug and is indifferent between getting a mug and getting c dollars. The value of the mug for C is 3 initially.
So, c = 3
- Student D is indifferent between losing a mug and losing d dollars. The value of the mug for D is 3 initially.
So, d = 3
4) In this case, value function for money:v(x dollars)={√x     x ≥ 0
            {-√-x   x < 0
Value function for mugs: Mug will have a value of 4 for someone who owns it and 3 for someone who does not own it.
The reference point is the status quo, i.e initial endowment. So,
- Student A owns a mug and is willing to sell it for a price of a dollars or more. The value of mug for A is 4 initially and he would sell it for 4 or more.
So, a ≥ A+2
- Student B does not own a mug and is willing to pay up to b dollars for buying it. The value of mug for B is 3 initially and he would buy it for 3 or less.
So, b ≤ B+3/2
- Student C does not own a mug and is indifferent between getting a mug and getting c dollars. The value of the mug for C is 3 initially and he would like to buy it for 3.
So, c = 3
- Student D is indifferent between losing a mug and losing d dollars. The value of the mug for D is 3 initially.
So, d = 3.

To know more about students visit:
https://brainly.com/question/29101948

#SPJ11

Circumference = 2 x r x pi

Circumference = 2 x 11 x pi

Circumference = 22pi or 69.08 inches depending on what format the answer is supposed to be in.

Answer:

Circumference = 2πr

Circumference = 2 × 3.14 × 11

Circumference = 22 × 3.14

Circumference = 69.08 in

\( \\ \)

The requried absolute value function |x-(-12)| = |x+12| when x is less than -12.

If x is less than -12, then x-(-12) will result in a negative number. However, the absolute value of any number is always positive, so we can simplify |x-(-12)| by making the expression inside the absolute value bars positive.

Since x is less than -12, x-(-12) can be simplified as follows:

x - (-12) = x + 12

So, |x-(-12)| = |x+12| when x is less than -12.

Learn more about the absolute value function here;

https://brainly.com/question/10664936

#SPJ1

Answer:

Step-by-step explanation:

you just add it

The probability of x falling between 33.53 and 70.97 is approximately 0.9342.

To find the probability of a normally distributed variable falling between two values, we need to standardize the values and then use a standard normal distribution table or calculator.

First, we standardize the values of 33.53 and 70.97 using the formula:

z = (x - μ) / σ

where z is the standardized value, x is the value we want to standardize, μ is the mean, and σ is the standard deviation.

For 33.53:

z = (33.53 - 50) / 9 = -1.8389

For 70.97:

z = (70.97 - 50) / 9 = 2.2178

Next, we look up the area under the standard normal distribution curve between these two standardized values using a table or calculator. Using a standard normal distribution table, we find that:

P(-1.8389 ≤ Z ≤ 2.2178) = 0.9671 - 0.0329 = 0.9342

Learn more about probability here

brainly.com/question/29018138

#SPJ4

so it is simple all you need to do is

Answer:

Number line 4

Step-by-step explanation:

−9x −12 ≤ 42

-9x-12+12≤42+12

-9x≤54

-9x/-9≤54/-9

x≤-6

Number line 4 will represent the solution set of given inequality

−9x −12 ≤ 42.

When two numbers or algebraic expressions are in opposition to one another, this is known as an inequality. It can be expressed as greater than, greater than or equal to, less than, or less than or equal to.

Given:

−9x −12 ≤ 42

-9x-12+12≤42+12

-9x ≤ 54

-9x/-9 ≤ 54/-9

x ≤ -6

To know more about inequality please visit:

https://brainly.com/question/28823603

#SPJ2

The following are the measures of angles and sides using the sine and cosine rules:

1). QR = 15, m∠P = 52°, m∠Q = 43°

2). BC = 21, DC = 10.4, m∠C = 22°

3). VX = 10.7, WX = 10.2, m∠V = 39°

4). HF = 18.4, m∠H = 28.7, m∠F = 15.3

The sine rule is a relationship between the size of an angle in a triangle and the opposing side. While the cosine rule relates the lengths of the sides of a triangle to the cosine of one of its angles.

1). Using the sine rule:

19/sin85 = 13/sunQ

Q = sin⁻¹[(13 × sin85)/19] {cross multiplication}

Q = 43

m∠P = 180° - (85 + 43) = 52°

QR = sin⁻¹[(19 × sin52)/sin85]

QR = 15.

2). m∠C = 180 + (19 + 139) = 22°

Using the sine rule:

BC = (12 × sin139)/sin22

BC = 21.

DC = (12 × sin19)/sin22

DC = 10.4

3). m∠V = 180 - (41 + 100) = 39°

Using the sine rule:

VX = (16 × sin41)/sin100

VX = 10.7

WX = (16 × sin39)/sin100

WX = 10.2

4). Using the cosine rule:

HF² = 7² + 13² - 2(7)(13)cos136°

HF = √338.8491

HF = 18.4

applying sine rule;

F = sin⁻¹[(7 × sin136)/18.4]

F = 15.3

m∠H = 180 - (15.3 + 136) = 28.7

Therefore, the measures of angles and sides using the sine and cosine rules are:

1). QR = 15, m∠P = 52°, m∠Q = 43°

2). BC = 21, DC = 10.4, m∠C = 22°

3). VX = 10.7, WX = 10.2, m∠V = 39°

4). HF = 18.4, m∠H = 28.7, m∠F = 15.3

Read more about sine cosine rule here:https://brainly.com/question/4372174

#SPJ1

Answer:

2x - 6 ≥ 6(x-2) + 8

2x - 6 ≥ 6x - 12 + 8

6x - 2x ≤ - 6 + 4

4x ≤ -2

4x/4 ≤ -2/4

x ≤ -1/2

Interval Notation: (- ∞, -1/2]

The line starts from -1/2 with the arrow going to the left (decreasing). The endpoint or value from where it started, which is -1/2, should be shaded.  The inequality symbol x ≤ -1/2 represents the values at most or maximum -1/2.

Step-by-step explanation:

The number line representing the solution set for the inequality given is option C.

The inequality is 2x - 6 ≥ 6(x-2) + 8,

Solving for x,

2x - 6 ≥ 6(x-2) + 8

2x - 6 ≥ 6x - 12 + 8

6x - 2x ≤ - 6 + 4

4x ≤ -2

4x/4 ≤ -2/4

x ≤ -1/2

Therefore, the Interval Notation is (- ∞, -1/2]

This means that the all the values of x will be less than -1/2 or equal to it,

Therefore, the graph will be, the line starts from -1/2 with the arrow going to the left (decreasing).

Learn more about inequality, click;

https://brainly.com/question/30231190

#SPJ7

Answer: hopefully this helps

D. The number of weeks after the first week

Step-by-step explanation:

Answer:

10c - 4d

Step-by-step explanation:

1. Rearrange the problem so similar variables are closer together

3c + 7c + 5d - 9d

2. Simplify the problem by adding like terms

3c + 7c = 10c

5d - 9d = -4d

3. Rewrite the problem so the variables are in ABC order

10c - 4d

Hope this helps :)

Answer:

10c   -4d

Step-by-step explanation:

3c - 9d +7c + 5d

Combine like terms

3c +7c    -9d +5d

10c   -4d

The given sample is stratified sampling with topology as the stratum variable.

Archaeologists plan to examine a sample of two-meter-square plots near an ancient Greek site for artifacts visible in the ground. They choose separate samples of plots from the floodplain, coast, foothills, and high hills. We need to find the kind of this sample.

It is not a simple random sample since we cannot include just floodplains in the sample, for example. As a result, not all feasible subsets have an equal chance of being picked. This is stratified sampling with topology as the stratum variable.

Statistics is the study of data gathering, organization, analysis, interpretation, and presentation. It is customary to begin with a statistical population or a statistical model to be researched when applying statistics to a scientific, industrial, or social problem.

To learn more about samples, visit :

brainly.com/question/11045407

#SPJ4

Therefore , the solution of the given problem of percentage comes out to be this amount to the closest dollar, we get $1,042.

A number or measure that is represented as a proportion of 100 is known as a "a%" in statistics. Additionally, the terms "pct," "pct," and "pc" are not commonly used. However, it is commonly denoted by the symbol "%". There are no dimensions; the percentage total is flat. Since a percentage's numerator is almost always 100, percentages are actually integers. To indicate that a number is a percentage, either the percentage symbol (%).

Here,

a. The formula: can be used to calculate the weekly payment.

=> P = (Ar(1+r)ⁿ) / ((1+r)^n - 1)

A = 9900, r = 0.06/12, and n = 48 in this instance (since there are 4 years or 48 months in total).

Substituting these numbers into the formula, we get:

=> P = (99000.005(1+0.005)⁴⁸) / ((1+0.005)⁴⁸ - 1) ≈ $227.88

Therefore, the monthly payment is roughly $227.88.

=> Overall = P*n = $227.88 * 48 = $10,942.24

We arrive at $10,942 by rounding this sum to the closest dollar.

c. The total interest paid over the course of the loan's four-year term is equivalent to the total amount repaid less the loan balance:

Total interest equals the total sum less A, or $10,942 minus $9,900, or $1,042.

Rounding this amount to the closest dollar, we get $1,042.

To know more about percentage visit:

https://brainly.com/question/28269290

#SPJ1

To convert the base-10 integer 102022 to different bases using the division-remainder method:

- Base-2: 11000111010100110

- Base-8: 307524

- Base-16: 18A16

The division-remainder method is a common approach for converting a base-10 integer to a different base. It involves dividing the given decimal number by the desired base and recording the remainders at each step until the quotient becomes zero.

In the case of converting 102022 from base-10 to base-2 (binary), we repeatedly divide the number by 2 and record the remainders. The process continues until the quotient becomes zero. The remainders, read in reverse order, give us the binary representation of the number, which is 11000111010100110.

Similarly, to convert 102022 to base-8 (octal), we divide the number by 8 and record the remainders until the quotient becomes zero. The remainders, read in reverse order, give us the octal representation of the number, which is 307524.

Lastly, to convert 102022 to base-16 (hexadecimal), we divide the number by 16 and record the remainders until the quotient becomes zero. The remainders, read in reverse order, give us the hexadecimal representation of the number, which is 18A.

The division-remainder method provides a systematic way to convert a base-10 integer to different bases by repeatedly dividing the number by the desired base and recording the remainders. This method can be applied to convert numbers to binary, octal, hexadecimal, or any other base. It is a fundamental technique used in computer programming and digital systems.

Learn more about Integer

brainly.com/question/15276410

#SPJ11

Step-by-step explanation:

The square root of 3 is the positive real number that, when multiplied by itself, gives the number 3. It is denoted mathematically as √3. It is more precisely called the principal square root of 3, to distinguish it from the negative number with the same property. The square root of 3 is an irrational number. 

In summary, the critical points in increasing order are:

x1 = -2

x2 = 0

x3 = 2

To find the critical points of the function f(x) = x^4 - 8x^2, we need to find the values of x where the derivative of f(x) is equal to zero or undefined.

First, let's find the derivative of f(x) with respect to x:

f'(x) = 4x^3 - 16x

To find the critical points, we set the derivative equal to zero and solve for x:

4x^3 - 16x = 0

Factoring out 4x, we have:

4x(x^2 - 4) = 0

Setting each factor equal to zero, we get:

4x = 0 --> x = 0

x^2 - 4 = 0 --> x^2 = 4 --> x = ±2

So, the critical points are:

x1 = -2

x2 = 0

x3 = 2

To determine the nature of these critical points, we can use the second derivative test or examine the behavior of the function around each critical point.

Taking the second derivative of f(x):

f''(x) = 12x^2 - 16

Now we can evaluate the second derivative at each critical point:

f''(-2) = 12(-2)^2 - 16 = 48 - 16 = 32

f''(0) = 12(0)^2 - 16 = -16

f''(2) = 12(2)^2 - 16 = 48 - 16 = 32

Since f''(-2) and f''(2) are both positive, the function has a local minimum at x = -2 and x = 2. Since f''(0) is negative, the function has a local maximum at x = 0.

Know more about critical points here;

https://brainly.com/question/32810485

#SPJ11

Yes, the data provide evidence that there is a linear association between hours of television watched a week and GPA. This statement can be supported by statistical analysis of the data.

A linear association exists between two variables when the pattern of their plotted values on a scatterplot approximates a straight line. A linear association occurs when one variable increases while the other decreases. It is also known as a straight-line relationship.

The data you have asked about, which is the relationship between hours of television watched a week and GPA can be analyzed using statistical tools. The data can be graphed in a scatterplot to see whether there is a pattern between the variables. If a straight-line pattern is observed, then there is a linear association.

The statistical tools that can be used to analyze the data include the calculation of the correlation coefficient and regression analysis. The correlation coefficient is a measure of the strength of the association between two variables. It ranges from -1 to 1, with -1 indicating a perfect negative relationship, 0 indicating no relationship, and 1 indicating a perfect positive relationship.

Regression analysis can be used to determine the equation of the line of best fit for the data. This line represents the linear relationship between the two variables. By analyzing the slope of the line, we can determine the strength of the relationship between the variables. In conclusion, yes, the data provide evidence that there is a linear association between hours of television watched a week and GPA.

Learn more about Linear association:

https://brainly.com/question/20257865

#SPJ11

The algebraic expressions given by the three students which was derived using the tiles represented in the figure are all correct.

Patti's algebraic expression :

2 - 1 + 2x - 3 could be broken down as follows :

Carla's Expression :

2x + 2 - 4 could be explained thus :

Emile's expression :

2x - 2 could be explained thus ;

2x + 2 - 1 - 3

2x + 2 - 4

2x - 2

Therefore, all the algebraic representation of the tiles  given by the students are all correct.

Learn more :https://brainly.com/question/18112348

Distinct prime factors does the product of these numbers have 2,3 , and 5 are the three distinct prime factors

Prime factorization is a process of factoring a number in terms of prime numbers i.e. the factors will be prime numbers.

Prime factorization is defined as a way of finding the prime factors of a number, such that the original number is evenly divisible by these factors.

As we know, a composite number has more than two factors, therefore, this method is applicable only for composite numbers and not for prime numbers.

The numbers must be 4,5 , and 6 .

4+5+6=15 and

4*5*6=120

=2^3*3*5

Distinct prime factors does the product of these numbers have 2,3 , and 5 are the three distinct prime factors.

To know more about Prime factorization visit brainly.com/question/28206792

#SPJ4

Distinct prime factors do the product of these numbers have 2,3, and 5 are the three distinct prime factors

Prime factorization is a process of factoring a number in terms of prime numbers i.e. the factors will be prime numbers.

Prime factorization is defined as a way of finding the prime factors of a number, such that the original number is evenly divisible by these factors.

As we know, a composite number has more than two factors, therefore, this method is applicable only to composite numbers and not to prime numbers.

The numbers must be 4,5, and 6.

4+5+6=15 and

4*5*6=120

=2^3*3*5

Distinct prime factors the product of these numbers have 2,3, and 5 are the three distinct prime factors.

To know more about Prime factorization visit brainly.com/question/28206792

#SPJ4

Answer:

The minimum value is 2.8.  The vertex is (-7, 2.8).

Step-by-step explanation:

Through the x^2 term we identify this as a quadratic function whose graph opens up.  The minimum value of this function occurs at the vertex (h, k).  The x-coordinate of the vertex is

        -b                                                    11.2

x = ---------             which here is x = - ------------ = -7

         2a                                                 2(0.8)

We need to calculate the y value of this function at x = -7.  This y-value will be the desired minimum value of the function.

Substituting -7 for x in the function f(x) = 0.8x^2 + 11.2x + 42 yields

f(-7) = 0.8(-7)^2 + 11.2(-7) + 42 = 2.8

The minimum value is 2.8.  The vertex is (-7, 2.8).

According to the conversation we can infer that the information focused on the conversation of two people; one of them is studing for an exam.

To identify what is the conversation about we have to consider who is talking and what are the ideas that they share. In this case, we can infer that the main idea of this conversation is that one of them is studying for an exam this week.

Also, the second person is apologizing because he considered that he is distracting the other person. So, the correc information about de conversation is a short conversation about study.

Note: This question is incomplete. Here is the complete information:

Conversation:
Hello

Hello, How are you?

I am fine, and you?

i am fine too, What are you doing?

I am studing for an exam this week.

Oh, sorry I won´t distract you.

Don´t worry.

Learn more about conversation in: https://brainly.com/question/27912759
#SPJ1

Yes. There has been a statistically significant change in the mean length of the bars.

The null hypothesis is that there is no change in the mean length of the bars. The alternative hypothesis is that there is a change in the mean length of the bars. The test statistic is t = -2.913, which is significant at the 5% level.

This means that there is a 5% chance of getting a result as extreme as this or more extreme if the null hypothesis is true. Therefore, we reject the null hypothesis and conclude that there has been a statistically significant change in the mean length of the bars.

The mean length of the bars before the change was 2.5 inches, and the standard deviation was 1.2 inches. The mean length of the bars after the change was 2 inches, and the standard deviation was 1 inch. The t-statistic was calculated as follows:

t = (2 - 2.5) / (1.2 / sqrt(1500)) = -2.913

The critical value for a two-tailed t-test with 1499 degrees of freedom and a significance level of 0.05 is 1.96. Since the t-statistic is less than the critical value, we reject the null hypothesis and conclude that there has been a statistically significant change in the mean length of the bars.

Visit here to learn more about standard deviation:

brainly.com/question/475676

#SPJ11

Yes. There has been a statistically significant change in the mean length of the bars.

The null hypothesis is that there is no change in the mean length of the bars. The alternative hypothesis is that there is a change in the mean length of the bars. The test statistic is t = -2.913, which is significant at the 5% level.

This means that there is a 5% chance of getting a result as extreme as this or more extreme if the null hypothesis is true. Therefore, we reject the null hypothesis and conclude that there has been a statistically significant change in the mean length of the bars.

The mean length of the bars before the change was 2.5 inches, and the standard deviation was 1.2 inches. The mean length of the bars after the change was 2 inches, and the standard deviation was 1 inch. The t-statistic was calculated as follows:

t = (2 - 2.5) / (1.2 / sqrt(1500)) = -2.913

The critical value for a two-tailed t-test with 1499 degrees of freedom and a significance level of 0.05 is 1.96. Since the t-statistic is less than the critical value, we reject the null hypothesis and conclude that there has been a statistically significant change in the mean length of the bars.

Visit here to learn more about standard deviation:

brainly.com/question/475676

#SPJ11

Answer:

Step-by-step explanation: