Identify whether sampling distribution appear to be approximately normal or not.

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Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 4.18, Problem 105SE

a.

To determine

Identify whether sampling distribution appear to be approximately normal or not.

b.

To determine

Check whether the mean of the sampling distribution of y¯ equals the mean of the eight population values.

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Consider the following hypothesis test. The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n 1 = 80 n 2 = 70 x 1 = 104 x 2 = 106 σ 1 = 8.4 σ 2 = 7.6 What is the value of the test statistic? If required enter negative values as negative numbers (to 2 decimals). What is the p-value (to 4 decimals)? Use z-table. With = .05, what is your hypothesis testing conclusion?

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Answer 2

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Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 4.18, Problem 105SE

a.

To determine

Identify whether sampling distribution appear to be approximately normal or not.

b.

To determine

Check whether the mean of the sampling distribution of y¯ equals the mean of the eight population values.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 3

Question

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 4.18, Problem 105SE

a.

To determine

Identify whether sampling distribution appear to be approximately normal or not.

b.

To determine

Check whether the mean of the sampling distribution of y¯ equals the mean of the eight population values.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 4.18, Problem 105SE

a.

To determine

Identify whether sampling distribution appear to be approximately normal or not.

b.

To determine

Check whether the mean of the sampling distribution of y¯ equals the mean of the eight population values.

Expert Solution & Answer

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Answer 5

Chapter 4.18, Problem 105SE

a.

To determine

Identify whether sampling distribution appear to be approximately normal or not.

b.

To determine

Check whether the mean of the sampling distribution of y¯ equals the mean of the eight population values.

Answer 6

Chapter 4.18, Problem 105SE

a.

To determine

Identify whether sampling distribution appear to be approximately normal or not.

Answer 7

Chapter 4.18, Problem 105SE

a.

To determine

Identify whether sampling distribution appear to be approximately normal or not.

Answer 8

b.

To determine

Check whether the mean of the sampling distribution of y¯ equals the mean of the eight population values.

Answer 9

b.

To determine

Check whether the mean of the sampling distribution of y¯ equals the mean of the eight population values.

Answer 10

Expert Solution & Answer

Answer 11

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Answer 12

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Answer 13

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Identify whether sampling distribution appear to be approximately normal or not.

Solution Summary: The author explains the step-by-step procedure to obtain probability plot for sample mean using MINITAB software.

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Identify whether sampling distribution appear to be approximately normal or not.

Check whether the mean of the sampling distribution of y¯ equals the mean of the eight population values.

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