The null hypothesis and the alternative hypothesis .

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Answer 1

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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 11, Problem 35CE

a.

To determine

To Find: The null hypothesis and the alternative hypothesis.

b.

To determine

To Find: The test statistic.

c.

To determine

To Find: The p -value of the hypothesis test.

d.

To determine

To Find: The decision about the null hypothesis.

e.

To determine

To Find: The interpretations of the result in the hypothesis testing.

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32. Consider a normally distributed population with mean μ = 80 and standard deviation σ = 14. a. Construct the centerline and the upper and lower control limits for the chart if samples of size 5 are used. b. Repeat the analysis with samples of size 10. 2080 101 c. Discuss the effect of the sample size on the control limits.

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?

Periodically, Merrill Lynch customers are asked to evaluate Merrill Lynch financial consultants and services (2000 Merrill Lynch Client Satisfaction Survey). Higher ratings on the client satisfaction survey indicate better service with 7 the maximum service rating. Independent samples of service ratings for two financial consultants are summarized here. Consultant A has 10 years of experience, whereas consultant B has 1 year of experience. Use = .05 and test to see whether the consultant with more experience has the higher population mean service rating. Consultant A Consultant B = 16 = 10 = 6.82 = 6.25 = .64 = .75 State the null and alternative hypotheses.H0: 1 - 2 Ha: 1 - 2 Compute the value of the test statistic (to 2 decimals). What is the p-value?The p-value is What is your conclusion?

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 11, Problem 35CE

a.

To determine

To Find: The null hypothesis and the alternative hypothesis.

b.

To determine

To Find: The test statistic.

c.

To determine

To Find: The p -value of the hypothesis test.

d.

To determine

To Find: The decision about the null hypothesis.

e.

To determine

To Find: The interpretations of the result in the hypothesis testing.

Expert Solution & Answer

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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 11, Problem 35CE

a.

To determine

To Find: The null hypothesis and the alternative hypothesis.

b.

To determine

To Find: The test statistic.

c.

To determine

To Find: The p -value of the hypothesis test.

d.

To determine

To Find: The decision about the null hypothesis.

e.

To determine

To Find: The interpretations of the result in the hypothesis testing.

Expert Solution & Answer

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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 11, Problem 35CE

a.

To determine

To Find: The null hypothesis and the alternative hypothesis.

b.

To determine

To Find: The test statistic.

c.

To determine

To Find: The p -value of the hypothesis test.

d.

To determine

To Find: The decision about the null hypothesis.

e.

To determine

To Find: The interpretations of the result in the hypothesis testing.

Expert Solution & Answer

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Answer 5

Chapter 11, Problem 35CE

a.

To determine

To Find: The null hypothesis and the alternative hypothesis.

b.

To determine

To Find: The test statistic.

c.

To determine

To Find: The p -value of the hypothesis test.

d.

To determine

To Find: The decision about the null hypothesis.

e.

To determine

To Find: The interpretations of the result in the hypothesis testing.

Answer 6

Chapter 11, Problem 35CE

a.

To determine

To Find: The null hypothesis and the alternative hypothesis.

Answer 7

Chapter 11, Problem 35CE

a.

To determine

To Find: The null hypothesis and the alternative hypothesis.

Answer 8

b.

To determine

To Find: The test statistic.

Answer 9

b.

To determine

To Find: The test statistic.

Answer 10

c.

To determine

To Find: The p -value of the hypothesis test.

Answer 11

c.

To determine

To Find: The p -value of the hypothesis test.

Answer 12

d.

To determine

To Find: The decision about the null hypothesis.

Answer 13

d.

To determine

To Find: The decision about the null hypothesis.

Answer 14

e.

To determine

To Find: The interpretations of the result in the hypothesis testing.

Answer 15

e.

To determine

To Find: The interpretations of the result in the hypothesis testing.

Answer 16

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Answer 17

Expert Solution & Answer

Answer 18

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Answer 19

Ch. 11 - Tom Sevits is the owner of the Appliance Patch....Ch. 11 - Prob. 1E Ch. 11 - Prob. 2E Ch. 11 - Prob. 3E Ch. 11 - As part of a study of corporate employees, the...Ch. 11 - Prob. 5E Ch. 11 - Mary Jo Fitzpatrick is the vice president for...Ch. 11 - Prob. 2SR Ch. 11 - Prob. 7E Ch. 11 - For Exercises 7 and 8: (a) state the decision...

The null hypothesis and the alternative hypothesis .

To Find: The null hypothesis and the alternative hypothesis.

To Find: The test statistic.

To Find: The p -value of the hypothesis test.

To Find: The decision about the null hypothesis.

To Find: The interpretations of the result in the hypothesis testing.

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Chapter 11 Solutions