suppose that early in an election campaign, a telephone poll of 800 registered voters shows that 460 favor a particular candidate. just before election day, a second poll shows that 520 of 1,000 registered voters now favor that candidate. at the 5% significance level, is there sufficient evidence that the candidate's popularity has changed? distribution used

Answer: (8,8)

Step-by-step explanation: because, you just need to do the math

The equation of line is y = ( 3/4 )x + 2

What is an Equation of a line?

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

And y - y₁ = m ( x - x₁ )

y = y-coordinate of second point

y₁ = y-coordinate of point one

m = slope

x = x-coordinate of second point

x₁ = x-coordinate of point one

The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Given data ,

Let the equation of line be represented as A

Now , the value of A is

Let the first point be P = P ( 8 , 8 )

Let the second point be Q = Q ( 4 , 5 )

Now , the slope of the line between the two points is

Slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Substituting the values in the equation , we get

Slope m = ( 5 - 8 ) / ( 4 - 8 )

Slope m = -3/-4

Slope m = 3/4

Now , the equation of line is y - y₁ = m ( x - x₁ )

Substituting the values in the equation , we get

y - 8 = 3/4 ( x - 8 )

On simplifying the equation , we get

y - 8 = ( 3/4 )x - 6

Adding 8 on both sides of the equation , we get

y = ( 3/4 )x + 2

Therefore , the value of A is y = ( 3/4 )x + 2

Hence , the equation of line is y = ( 3/4 )x + 2

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Leo is approximately 13.928 km away from the starting point.

Given that Leo walked 7 km south and then 12 km east, we need to determine the distance from the starting point,

To determine the distance from the starting point, we can use the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.

In this case, the distance Leo walked south forms one side of a right triangle, and the distance he walked east forms the other side. The distance from the starting point will be the length of the hypotenuse.

Using the Pythagorean theorem, we can calculate the distance from the starting point as follows:

Distance² = (7 km)² + (12 km)²

Distance² = 49 km² + 144 km²

Distance² = 193 km²

Taking the square root of both sides gives us:

Distance = √(193)

Distance ≈ 13.928 km

Therefore, Leo is approximately 13.928 km away from the starting point.

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Complete question =

Leo walk 7km south then 12km east. How far is he from the starting point?

Step-by-step explanation:

because when the exponent is an odd number a negative number stays negative

and when the exponent is an even number the sign changes and a negative number becomes positive

Answer:

1:0.5

Or

2:1

Step-by-step explanation:

the left side we can find distance by just counting the units without using a formula

Bigger shape LP Length is 5

Smaller shape WZ length is 2.5

Since the shape was originally bigger then this will be a fraction so we divide 2.5 by 5

2.5/5

1/2

Or

0.5

ratio it to make 1:0.5

Hopes this helps please mark brainliest

Answer:

Hello!

___________________-

196 1/12 - 13 9/12 = 547/3

Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain the variable.

Hope this helped you!

Answer:

547/3 I think :>

Step-by-step explanation:

The "Daisy Ad" for President Johnson's 1964 presidential campaign   (credited as an important factor in Johnson's landslide victory over Batty Goldwater,) aired only once.

The "Daisy Ad" is a famous political advertisement that aired during the 1964 presidential campaign between President Lyndon B. Johnson and Senator Barry Goldwater. It is widely recognized as a highly impactful and influential advertisement. Despite its significant impact, the ad was actually broadcasted only once.

The ad featured a little girl counting the petals of a daisy before transitioning to a nuclear explosion, symbolizing the potential consequences of electing Goldwater as president. The ad aimed to evoke fear and concern about the possibility of nuclear war, ultimately contributing to Johnson's landslide victory in the election.

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The expression for the height of the box is 3x^(1)y^(-1)z^(1) units.

The volume of a rectangular box is given by the formula V = lwh, where l is the length, w is the width, and h is the height. We are given the volume, width, and length of the box and we are asked to find the expression for its height.

Volume = 60x^(6)y^(6)z^(10)
Width = 2x^(2)y^(3)z^(4)
Length = 10x^(3)y^(4)z^(5)

Substituting the given values into the formula for volume, we get:

\(60x^{(6)}y^{(6)}z^{(10)} = (2x^{(2)}y^{(3)}z^{(4))}(10x^{(3)}y^{(4)}z^{(5))(h)\)

Simplifying the right side of the equation, we get:

60x^(6)y^(6)z^(10) = 20x^(5)y^(7)z^(9)(h)

Dividing both sides of the equation by 20x^(5)y^(7)z^(9), we get:

h = (60x^(6)y^(6)z^(10))/(20x^(5)y^(7)z^(9))

Simplifying the fraction, we get:

h = 3x^(1)y^(-1)z^(1)

Therefore, the expression for the height of the box is 3x^(1)y^(-1)z^(1) units.

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Answer:

11

Step-by-step explanation:

you can find the area of the cube and convert it to liters, if the area if the cube is more than the amount of soil then the soil is less, if the amount of soil is more than area of the cube then u have more soil and if they're both the same u have the perfect amount of soil

Answer:

x = 4

Step-by-step explanation:

The extent to which the researcher can refer that findings with a sample from which it was drawn is referred to as generalizability.

Generalizability refers to the ability to extrapolate study findings from a sample to the entire population. It also refers to the capacity to apply findings from one study to a similar environment in a different investigation.

Generalizability and transferability are two research traits that are related. When considering generalizability in research, there are two features or dimensions to consider: generalizability as it relates to the specific population on which the research is conducted, and generalizability on a global scale.

Such studies will be easier to generalize if the researcher uses adequate sampling approaches, sample sizes, and exact processes.

In general, a study has strong generalizability when the findings apply to a wide range of persons or situations. The study has weak generalizability if the results can only be applied to a subset of the population or in a very specific circumstance.

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Answer:

9/35

Step-by-step explanation:

There are a total of 15 bulbs to choose from randomly. First a new bulb is chosen. Chance is 9/15 because 9 out of 15 are new.

Then there are only 14 bulbs left. Then a used bulb is chosen. Chance is 6/14 since 6 out of remaining 14 are used.

Total chance for this to happen is 9/15 * 6/14 = 54/210 = 9/35.

Answer:

3rd one

Step-by-step explanation:

Range goes to the y-values

The y values are 16 19 and 16

So the range will be (16,19)

Thee appropriate confidence level to use would be 95%. The rate of fatalities is higher for patients transported by helicopter than those transported by ground services. Furthermore, we have also determined the appropriate confidence level to use if we follow up the hypothesis test with a confidence interval.

Here, Null Hypothesis H0: The rate of fatalities for patients transported by helicopter is less than or equal to that transported by ground services. Alternative Hypothesis H1: The rate of deaths for patients transported by helicopter is more than that transported by ground services.

a) Given that :

n1 = 61909,

n2 = 161566,

x1 = 7813

x2 = 17775.

The sample proportions are p1= x1 / n1= 0.126 and p2 = x2 / n2= 0.11.

The pooled proportion is:

p = (x1 + x2) / (n1 + n2)

= (7813 + 17775) / (61909 + 161566)

= 0.11012.

The test statistic for testing the null hypothesis is given by:

z = (p1 - p2) / SE (p1 - p2) where

SE(p1 - p2) = √ [p (1 - p) (1 / n1 + 1 / n2)]

SE (p1 - p2) = √ [(0.11012) (0.88988) (1 / 61909 + 1 / 161566)]

SE (p1 - p2) = 0.0025

z = (0.126 - 0.11) / 0.0025

z = 6.4

At a 0.01 significance level, the critical value for the right-tailed test is:

z = 2.33

We reject the null hypothesis since the test statistic is greater than the critical value. So, there is enough evidence to support the claim that the rate of fatalities is higher for patients transported by helicopter than those transported by ground services.

b) As we have rejected the null hypothesis, we can say that the proportion of patients transported by helicopter who died due to severe traumatic injuries is significantly higher than that of patients transported by ground services. To find the appropriate confidence interval, we need to know the sample size, the sample proportion, and the confidence level to find the margin of error. So, to answer the question, we need to know the desired confidence level. The appropriate confidence level would be 95%.

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There is a regular octagon with n = 8 sides. The minimum rotational symmetry angle is,

= 360/n

= 360/8

= 45 degrees.

Rotating this amount does not change the regular octagon. The front and back look the same.

Suppose that we are given a regular polygon with N sides, the angles of rotational symmetry are:

A = n * 360° / N

where n can take values = 1, 2, N, and there are N different angles. It is the minimum rotational symmetry when n equals 1.

So, in this case,

A = 360 / N , R = 30°

And we want to find the number N.

30° = 360° / N

N = 360° / 30°

N = 12

This means that a regular polygon has 12 sides.

12 Upright Step by step:

360° ÷ 8 = 45°

8 because the octagon has 8 sides.

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Answer:

45 Degrees

Step-by-step explanation:

just answered <3

Answer:

y=4x+3

Step-by-step explanation:

find the slope using y2-y1/x2-x1

11-3/2-0

simplify

8/2

simplify

4

find b by using the equation y=mx+b

since we know 4 is the slope, plug it in for m

plug an ordered pair into y=4x+b

3=4(0)+b

3=b

plug b in y=4x+b

y=4x+3

The position value, r(t) is equals to the (t³/6)k + 2j and velocity value, v(t) is equals to ( t²/2 )k + 4i , for a(t) = tk, v(0) = 4i, r(0) = 2j.

Acceleration is defined as the rate of change of the velocity of an object with respect to time. Accelerations are vector quanty.

a = dv/dt

We have the following informations are available,

Initial velocity, v(0) = 4i

Initial position, r(0) = 2j

Acceleration at any time "t",

a(t) = tk

we have to determine the value of v(t) and r(t).

As we know, a(t) = dv(t)/dt = tk

integrating the above equation ,

v(t) = ∫tk dt = ( t²/2 )k + c

at t = 0 , v(0) = 0 + c = 4i ( since, v(0) = 4i

=> c = 4i

So, v(t) = ( t²/2 )k + 4i

Also, velocity is calculated by derivative of postion (r) with respect to time.

=> v(t) = dr(t) /dt

=> r(t) = ∫ v(t) dt

=> r(t) = ∫ ( t²/2 )k dt

integrating value of the right hand side,

r(t) = ( t³/2×3 )k +d

= (t³/6)k + d

At t = 0, r(0) = (0/6)k + d

=> r(0) = d = 2j

so, r(t) = (t³/6)k + 2j

Hence, the required position and velocity are

(t³/6)k + 2j and ( t²/2 )k + 4i.

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Answer:

m(<M) > m(<N)

Step-by-step explanation:

Answer:

m<M < m<N is right one.hope it helps

Answer:

good luck

Step-by-step explanation:

According to the chi square test, yes and at alpha 0.05 there is a significant difference in music preferred by the three restaurants' customers.

The term chi square test refers a statistical hypothesis test used in the analysis of contingency tables when the sample sizes are large.

Here we have given that a researcher is interested in whether a significant trend exists regarding the popularity of certain music played at restaurants. a random sample of 50 customers from each of three restaurants is selected. the customers are asked to indicate which of three music types: country, jazz, and classical they preferred

And we need to find results deviate significantly from what would be expected due to chance.

While we reading the given question, we know that a researcher is interested in whether a significant trend exists regarding the popularity of certain music played at restaurants.

And the number of samples = 50

When we convert it into the percentage then we get,

=> 50/1000

=> 0.05

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The area of the regular polygons with 12 sides(dodecagon) and 5 sides (pentagon) are 389.06 in² and 19.87 in² respectively.

Area of regular polygon = 1/2 × apothem × perimeter

perimeter = (s)side length of octagon × (n)number of side.

apothem = s/[2tan(180/n)].

11 = s/[2tan(180/12)]

s = 11 × 2tan15

s = 5.8949

perimeter = 5.8949 × 12 = 70.7388

Area of dodecagon = 1/2 × 11 × 70.7388

Area of dodecagon = 389.0634 in²

Area of pentagon = 1/2 × 5.23 × 7.6

Area of pentagon = 19.874 in²

Therefore, the area of the regular polygons with 12 sides(dodecagon) and 5 sides (pentagon) are 389.06 in² and 19.87 in² respectively.

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A unbiased estimator is a statistic that accurately reflects the population mean, μ. A statistic is unbiased when the mean of its sampling distribution is equal to μ.

Mathematically, this can be expressed as:

E(x) = μ

Where E(x) is the expected value of x and μ is the population mean.

This means that if we take a sample from a population and calculate the mean from that sample, the expected value of that mean should be equal to the population mean. This can be seen in the following example:

Let's say we have a population with a mean of 30. We take a sample of size 5 from this population and calculate the sample mean, x. The expected value of x should be equal to 30. We can calculate this using the formula:

E(x) = ∑xi/n

Where xi are the values in the sample and n is the sample size.

For our example, E(x) = (30 + 30 + 30 + 30 + 30) / 5 = 30

This shows that x is an unbiased estimator of μ.

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Answer:

the answer is c

Step-by-step explanation:

im dumb don't listen but I know you will figure it out if you use you brain and you notes ; )

Answer:

x=1

i hope this helps!

Step-by-step explanation:

x+2/-1 =3

x+2 (1) =3

x+2 = 3

x=1

Answer:

Your answer is $5.39.

Step-by-step explanation:

There are 4 pairs of gloves. The unit price is only for a single pair of gloves, so divide the total cost by the pairs of gloves to get your answer: 21.56 ÷ 4 = 5.39. (Also, since we are talking about money, there would be a dollar sign next to 5.39: $5.39)

The equation of motion is given by ∂LD/∂ψ - ∂(∂LD/∂(∂μψ))/∂μ = 0, and the effective action is obtained by integrating the Lagrangian over space and time: S_eff = ∫∫∫∫ LD d^4x.

To determine the equation of motion and the effective action for the given Lagrangian, we can follow these steps:

Calculate the Euler-Lagrange equation by taking the variation of the Lagrangian with respect to the field ψ and its conjugate ψˉ:

∂LD/∂ψ - ∂(∂LD/∂(∂μψ))/∂μ = 0

Compute the derivative term ∂(∂LD/∂(∂μψ))/∂μ using the given Lagrangian:

∂(∂LD/∂(∂μψ))/∂μ = ∂(iψˉ∂μψ)/∂μ = i∂μ(ψˉ∂μψ)

Substitute the derivative term and the Lagrangian into the Euler-Lagrange equation and simplify to obtain the equation of motion.

To find the effective action, integrate the Lagrangian over space and time:

S_eff = ∫∫∫∫ LD d^4x

By following these steps, you can determine the equation of motion and the effective action for the given Lagrangian.

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Answer:

♦LCM of 5 and 20 is 20.

#Let's Study

#I Hope It's Help

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Given the positive sequences {a_n} and {b_n} such that a_n ≤ x ≤ b_n for all n ≥ 1, we can conclude that the series ∑ a_n and ∑ b_n both converge.

Since a_n ≤ x ≤ b_n for all n ≥ 1, it means that the terms of the sequence {a_n} are bounded from above by x and the terms of the sequence {b_n} are bounded from below by x.

By the Comparison Test for series, if we have a series with non-negative terms and there exists another series with non-negative terms such that each term of the first series is less than or equal to the corresponding term of the second series, then if the second series converges, the first series also converges.

Applying this concept to the series ∑ a_n and ∑ b_n, since a_n ≤ x ≤ b_n for all n ≥ 1, and we know that x is a constant value, it implies that ∑ a_n and ∑ b_n both converge.

Note that this conclusion assumes the positive sequences {a_n} and {b_n} are bounded and well-defined.

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