Flying Home for the Holidays Does the airline you choose affect when you'll arrive at


your destination? The dataset DecemberFlights contains the difference between actual and


scheduled arrival time from 1000 randomly sampled December flights for two of the major North


American airlines, Delta Air Lines and United Air Lines. A negative difference indicates a flight


arrived early. We are interested in testing whether the average difference between actual and


scheduled arrival time is different between the two airlines.


a. Define any relevant parameter(s) and state the null and alternative hypotheses.


b. Find the sample mean of each group, and calculate the difference in sample means.


c. Use StatKey or other technology to create a randomization distribution and find the p-value.


d. At a significance level of a = 0. 01, what is the conclusion of the test? Interpret the conclusion in


context.


a

Answer 2,4 are all described as unit rates  a unit rate is anything that has per or each in it so a certain type of boat travels at 7 hours PER mile so we know question 2 is correct and 3 is a unit rate because it has each in it A summer camp provides 3 meals for EACH camper. That’s why the answer is 2 and 4

The correlation coefficient of 0.90 indicates a strong positive linear correlation between happiness and GPA of high school students.

A correlation coefficient measures the strength and direction of the relationship between two variables. In this case, the correlation coefficient of 0.90 indicates a strong positive linear correlation between happiness and GPA of high school students.

A positive correlation means that as one variable (in this case, happiness) increases, the other variable (GPA) also tends to increase. The magnitude of the correlation coefficient, which ranges from -1 to 1, represents the strength of the relationship. A value of 0.90 indicates a very strong positive linear correlation, suggesting that there is a consistent and significant relationship between happiness and GPA.

This means that as the level of happiness increases among high school students, their GPA tends to be higher as well. The correlation coefficient of 0.90 suggests a high degree of predictability in the relationship between these two variables.

It is important to note that correlation does not imply causation. While a strong positive correlation indicates a relationship between happiness and GPA, it does not necessarily mean that one variable causes the other. Other factors or variables may also influence the relationship between happiness and GPA.

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Answer:

Angle 1 and Angle 5

Step-by-step explanation:

Since we know that a straight angle is 180 degrees this means that angle 2+5+1 is 1/2 of a full angle. We also know that angle 2 is 90 degrees or a right angle, we can subtract 180 - 90 which equals 90 degrees. Since two complementary angles add up to 90 degrees. This 100% assures us that angle 1 + angle 5 are the two complementary angles.

Hope this Helps!!! :)

Let me know if I should change anything or if it is helpful in the comments.... thx!!!

Answer:

200 bags are needed

Step-by-step explanation:

First let us determine the area of the corn field:

Shape of cornfield = square

Area of a square = Length × Length

where: Length = 100 yards

∴ Area = 100 × 100 = 10,000 square yards

1 bag of fertilizer is needed to cover 50 square yards:

50 square yards = 1 bag of fertilizer

\(\therefore 1 \ square\ yard\ = \frac{1}{50}\ bag\\10,000\ square\ yards\ =\ \frac{1}{50} \times 10,000 = \frac{10l000}{50} \\ = 200 bags\)

Hence, 200 bags are needed.

Answer:

200 bags are needed

Step-by-step explanation:

I did the test and got it correct good luck everyone !!

Answer:

No more

Step-by-step explanation:

Answer:

If u double both numerator & denominator, this ration is 46/100

This answer is 46%

The area of the shaded region is 198 ft2.

Area is a measure of the size of a two-dimensional region. It is a scalar quantity, meaning it is a single numerical value without any direction. Area is expressed in units such as square feet, square meters, hectares, acres, and square miles. Area is usually used to measure the size of a physical space. It can also be used to measure the amount of a certain material, such as soil or water, that is available in a given space.

The area of the shaded region can be determined by using the formula A = l x w. In this case, the length is 18 ft and the width is 11 ft. Multiplying these two measurements together gives us the result of 198 ft2. This is the area of the shaded region. To verify the answer, we can also calculate the area by subtracting the area of the unshaded triangle (19 ft x 12 ft / 2 = 114 ft2) from the area of the rectangle (19 ft x 12 ft = 228 ft2). This gives us the same result of 198 ft2.

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Answer:

8.

Step-by-step explanation:

13).

This is an equilateral triangle.

We see that all 3 angles are equal,  so all sides are equal also.

So 2x - 6 = 10

2x = 16

x = 8.

Answer:

Step-by-step explanation:

If I am correct the triangle has equal sides and I think you're trying to find x. So 10=2x-6 and then solve. Once you get the x (assuming you know how to get it) plug it into the equation (of 2x-6) and get the remaining number. (For example: if x=2 then 2x2-6, then you solve: 2x2=4 4-6=-2) I don't know if you want the answer though...

(depends if you want x or the rest)

Answer:

upper control limit  = 6.058

lower control limit =  0.442

Step-by-step explanation:

Given that:

The numbers of sample n Mogul executives took = 8 Eagletrons at a time.

They find out that the average  sample mean is 88.50 mph and;

the average range \(\overline r\) is 3.25 mph.

From the tables:

\(\text {Table values for n = 8 } \left \{ {{D_4=1.864} \atop {D_3=0.136}} \right.\)

Control Limit = \(\overline r\)  = 3.25

Therefore; the upper control limit and the lower control limit can be computed as follows:

upper control limit  = \(D_4 \overline r\)

upper control limit  = 1.864(3.25)

upper control limit  = 6.058

lower control limit = \(D_3 \overline r\)

lower control limit =  0.136(3.25)

lower control limit =  0.442

In unimodal distributions, when the mode, the median, and the mean coincide or are almost identical, the distribution is symmetrical. A symmetrical distribution has data values that are evenly distributed on both sides of the centerline or median.

The right half of a symmetrical distribution is a mirror image of the left half. For instance, a bell-shaped curve is symmetrical, meaning that data values are evenly distributed on both sides of the centerline or median. The normal distribution is a prime example of a symmetrical distribution, and it is unimodal. When data values in a distribution are skewed, the mode, the median, and the mean will differ. If the majority of the data values are concentrated to the right of the median, the distribution is positively skewed. In contrast, if the majority of the data values are concentrated to the left of the median, the distribution is negatively skewed. Therefore, the correct option is (b) Symmetrical.

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Answer:

16

Step-by-step explanation:

Substitute s = - 3 into the expression

7 - 3(- 3) = 7 + 9 = 16

Answer:

Step-by-step explanation:

A surface analysis chart is a type of weather map that displays information about the current pressure and wind patterns over a particular region. The chart provides a snapshot of the weather conditions at a specific point in time and helps meteorologists to identify and track the location, movement, and development of high- and low-pressure systems, fronts, and other weather features.

The surface analysis chart typically shows a map of the Earth's surface with various meteorological symbols and information, including isobars (lines of equal pressure), fronts (boundaries between different air masses), and wind direction and speed. The chart may also include information about temperature, precipitation, and cloud cover.

Surface analysis charts are used in weather forecasting, air traffic control, and other applications where an understanding of current weather conditions is important. They provide important information for short-term weather forecasting, such as predicting the location of fronts and the development of thunderstorms, and for long-term weather planning, such as determining the most suitable routes for shipping or aviation.

1: 4(2x-10)=8

2x-10=8/4

2x=2+10

x=12/2=6

Answer:

2: 2(2x-10)=8

2x-10=8/2

2x=4+10

x=14/2=7

Answer:

x+20>50

Step-by-step explanation:

Answer:

The answer is x+20⩾50

Step-by-step explanation:

in inequality, the word at least means that is equal or more than. so that means that Allie might equal or more than 50 hours in the model but if you're to solve it, Allie will need 30 or more hours. and since she already has 20, add the 20.

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1.The multiples of 3 in the spinner are 30, 60, and 0 (which is also a multiple of 3).

2. The probability of spinning a multiple of 3 is 3/8.

3. We can expect 30 spins out of 80 to result in a multiple of 3.

1. Starting with 20, the numbers on the spinner are all successive multiples of 10. We must examine the last digit in order to identify the multiples of three in each integer.

2. The proportion of areas on the spinner that are multiples of 3 to all regions on the spinner is the likelihood of spinning a multiple of 3. There are a total of eight regions, three of which are multiples of three.

3. Using the expected value of a binomial distribution formula, we can determine how many spins out of 80 will produce a multiple of 3:

E(x) = np

where n is the total number of spins, and E(x) is the anticipated number of spins that display a multiple of three.

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The equation is 4x + 1=9, where x is the variable is satisfied for x=2.

In the algebra, an equation is a condition based on the variable. It can only be met if a particular value is present for the variable. As a result, the equation 2x - 5 = 13 can only be satisfied by the value of x = 9.

An amount that can fluctuate or altered depending on the mathematical issue is referred to as a variable.

Let's use the variable "x" to construct the equation.

Here, the equation is 4x + 1=9, where x is the variable.

Step1: writing the equation

4x + 1 = 9

Step2: taking 1 to the right side

4x = 9-1

Step3: divide 8 by 4, we get

x =\(\frac{8}{4}\)

x = 2

In the above example, 4x + 1 = 9 represents the equation.

Hence, we get the value of x=2, which means that for the value of x=2 the equation will satisfied.

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Answer:

n = -13

Step-by-step explanation:

19 + 10n = 7n - 20

Subtract 7n from each side

19 + 10n-7n = 7n-7n - 20

19+3n = -20

Subtract 19 from each side

19+3n -19 = -20-19

3n = -39

Divide each side by 3

3n/3 = -39/3

n = -13

An aggregation of parts is also called a A. Subsystem.

In computing, a subsystem is an aggregation or a compilation of parts that then form a system that is able to carry out certain types of purposes.

For instance, a central processing unit on a computer is a subsystem that has things such as the processor and the ram.

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Answer:11

Step-by-step explanation:

Answer:

B - 11

Step-by-step explanation:

Expreion have a quotient of 6 is 0. 48 ÷ 0. 08.

What is quotient?

In mathematics, the quotient is the result of performing division operations on two integers. It is essentially the outcome of the division procedure. In arithmetic division, the terms divisor, dividend, quotient, and remainder are employed in four different ways.Division is one of the four basic operations of arithmetic, the ways that numbers are combined to make new numbers. The other operations are addition, subtraction, and multiplication.

0. 48 ÷ 0. 8

=0.06

The solution for Long Division of \($\frac{4.8}{8}$\) is 0.6

The solution for Long Division of \($\frac{0.48}{0.08}$\) is 6.

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the general solution is:\(y = C₁eⁱᵗ + C₂e²ⁱᵗ + C₃e⁻ᵗ + C₄e²⁻ᵗ\)(where t = x) The second question is about how to obtain the general solution of the following equation:\((D³ + 5D² + 7D + 3)y = 0\) We can use the method of characteristic equation here.

\(D³ + 5D² + 7D + 3 = 0\) Let λ be the solution of this equation,

then\((D - λ)³ + 5(D - λ)² + 7(D - λ) + 3 = 0\)

We can simplify it as follows:\(D³ - 3λD² + 3λ²D - λ³ + 5D² - 10λD + 5λ² + 7D - 7λ + 3 = 0D³ + (2λ + 5)D² + (3λ² - 10λ + 7)D + (5λ² - 7λ + 3) = 0\)

As this is a homogeneous equation, D = 0 is a solution of the above equation.So, \((D - λ)(D² + (2λ + 5)D + (3λ² - 10λ + 7)) = 0\) For solving the quadratic equation, we have:\(D = (-2λ - 5 ± √(4λ² + 20λ - 7))/2D = (-2λ - 5 ± √((2λ + 5)² + 3))/2\)

We can simplify the quadratic equation as:\((D² - 3)(4D² + 4D(λ² - 3) - λ² + 1) = 0\)We can find the solutions of the above equation as:\(D = ± √3, λ₁, λ₂\)where λ₁ and λ₂ are the solutions of the quadratic equation given above.Therefore, the general solution of the given equation is:\(y = C₁e^(λ₁x) + C₂e^(λ₂x) + C₃e^(√3x) + C₄e^(-√3x) + C₅x*e^(-x)\)

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Answer:

x/5+9/5=y or x+9/5=y

Step-by-step explanation:

y= 5x-9

x=5y-9

x+9=5y

x+9/5=y

Answer:

Bias from using a convenience sample (C)

Step-by-step explanation:

This sampling method is an example of taking a convenience sample because the mobile phone service provider is only taking samples from the people that responded. The availability of certain people causes a bias in the data drawn from this sampling method.

Answer:

30.7 cm² (nearest tenth)

Step-by-step explanation:

Area of the wooden block = area of rectangle - area of semi-circle

Area of Rectangle = length × width

Length = 9 cm

Width = 4.5 cm

Area of rectangle = 40.5 cm²

Area of semi-circle = ½(πr²)

Radius (r) = ½ of diameter = ½*5 = 2.5 cm

π = 3.14

Area of semi-circle = ½(3.14*2.5²)

Area of semi-circle = 9.8125 cm²

✅Area of the wooden block = 40.5 - 9.8125 = 30.7 cm² (nearest tenth)

The area of the wooden block is \(30.7 cm^2\).

We know that

Area of the wooden block = area of the rectangle - area of semi-circle

Here

\(Area\ of\ Rectangle = length \times width\)

Here Length = 9 cm

And, Width = 4.5 cm

So,

Area of rectangle = \(40.5 cm^2\)

Now  

Area of semi-circle is

\(= \frac{1}{2} \pi r^2\)

\(= \frac{1}{2} \times 3.14\times 2.5^2\)

= \(9.8125 cm^2\)

Now the Area of the wooden block is

= 40.5 - 9.8125

= 30.7

Therefore we can conclude that the area of the wooden block is \(30.7 cm^2\).

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Answer:

180- 148 = 32 (the measure of the angle thats supplementary to the exterior

180 - 56 -32 =92 (180 is the interior triangle angle sum, subtract the known angles to discover the unknown angle.

angle h = 92 degrees

Step-by-step explanation:

I hope this helped :)

Answer:

yes because since they are new they are all going to have a different opinion on the school than other teachers thats been there for years

hope this helps

have a good day :)

Step-by-step explanation:

Yes, it would likely be biased because they might be like an advertisement since they weren't teaching for years at this school.

If this helps, please mark me brainliest!

Have an amazing day!

Answer:

2x - 3 > 7

2x > 7 + 3

2x > 10

x > 10/2

x > 5

Answer:

Step-by-step explanation:

factor out 2 from the expression then the solution is 2(3x^2+5)!

Answer:

The GCF of 6x2+10 is 2

The difference between the maximum and minimum of the quantity x²y²13 is found as the 192.

The given expression is x²y²13.

We need to find the difference between the maximum and minimum of the quantity.

To solve this problem, we will use the AM-GM inequality.

AM-GM Inequality is a very fundamental inequality that states that the arithmetic mean (AM) of a set of non-negative numbers is always greater than or equal to their geometric mean (GM).

Here x and y are two non-negative numbers such that xy = 2.

Using AM-GM inequality, we can say that:x²y²13 ≥ 4xy² = 4(2)² = 16

Therefore, the minimum value of the expression x²y²13 is 16.

Now, to find the maximum value of x²y²13, we can use the method of Lagrange Multipliers.

Using Lagrange Multipliers, we need to maximize f (x, y) = x²y²13 subject to the constraint g(x, y) = xy - 2 = 0.

Let's solve this by forming the Lagrange function:L(x, y, λ) = x²y²13 - λ(xy - 2)

Differentiating with respect to x, y, and λ and equating them to 0:

∂L/∂x = 2xy²13 - λy

= 0∂L/∂y = 2yx²13 - λx

= 0∂L/∂λ = xy - 2 = 0

Solving these equations, we get:

x² = 2y²λand y² = 2x²λ

Solving these equations, we get y² = 4 and x² = 8/3.

Using the constraint xy = 2, we get x = √(8/3) and y = √(12/3) = √4 = 2

Substituting these values back into the expression, we get the maximum value as:

x²y²13 = (8/3) × 4 × 13

= 208/3

Therefore, the maximum value of x²y²13 is 208/3.

The difference between the maximum and minimum values is:

208/3 - 16

= (624 - 48)/3

= 576/3

= 192

So, the difference between the maximum and minimum of the quantity x²y²13 is 192.

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