The claim and state H 0 and H a .

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Answer 1

Question

Chapter 8.4, Problem 11E

a.

To determine

To identify: The claim and state H0 and Ha .

b.

To determine

To find: The critical value and rejection region with α=0.05 .

c.

To determine

To find: The standardized test statistic z.

d.

To determine

To decide: Whether to reject or fail to reject the null hypothesis at a level of significance of α=0.05 .

e.

To determine

To interpret: The decision in the context of the original claim.

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For unemployed persons in the United States, the average number of months of unemployment at the end of December 2009 was approximately seven months (Bureau of Labor Statistics, January 2010). Suppose the following data are for a particular region in upstate New York. The values in the first column show the number of months unemployed and the values in the second column show the corresponding number of unemployed persons. Months Unemployed Number Unemployed 1 1029 2 1686 3 2269 4 2675 5 3487 6 4652 7 4145 8 3587 9 2325 10 1120 Let x be a random variable indicating the number of months a person is unemployed. a. Use the data to develop an empirical discrete probability distribution for x (to 4 decimals). (x) f(x) 1 2 3 4 5 6 7 8 9 10 b. Show that your probability distribution satisfies the conditions for a valid discrete probability distribution. The input in the box below will not be graded, but may be reviewed and considered by your instructor. blank c. What is the probability that a…

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For unemployed persons in the United States, the average number of months of unemployment at the end of December 2009 was approximately seven months (Bureau of Labor Statistics, January 2010). Suppose the following data are for a particular region in upstate New York. The values in the first column show the number of months unemployed and the values in the second column show the corresponding number of unemployed persons. Months Unemployed Number Unemployed 1 1029 2 1686 3 2269 4 2675 5 3487 6 4652 7 4145 8 3587 9 2325 10 1120 Let x be a random variable indicating the number of months a person is unemployed. a. Use the data to develop an empirical discrete probability distribution for x (to 4 decimals). (x) f(x) 1 2 3 4 5 6 7 8 9 10 b. Show that your probability distribution satisfies the conditions for a valid discrete probability distribution. The input in the box below will not be graded, but may be reviewed and considered by your instructor. c. What is the probability that a person…

Answer 2

Question

Chapter 8.4, Problem 11E

a.

To determine

To identify: The claim and state H0 and Ha .

b.

To determine

To find: The critical value and rejection region with α=0.05 .

c.

To determine

To find: The standardized test statistic z.

d.

To determine

To decide: Whether to reject or fail to reject the null hypothesis at a level of significance of α=0.05 .

e.

To determine

To interpret: The decision in the context of the original claim.

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Answer 3

Question

Chapter 8.4, Problem 11E

a.

To determine

To identify: The claim and state H0 and Ha .

b.

To determine

To find: The critical value and rejection region with α=0.05 .

c.

To determine

To find: The standardized test statistic z.

d.

To determine

To decide: Whether to reject or fail to reject the null hypothesis at a level of significance of α=0.05 .

e.

To determine

To interpret: The decision in the context of the original claim.

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Answer 4

Question

Chapter 8.4, Problem 11E

a.

To determine

To identify: The claim and state H0 and Ha .

b.

To determine

To find: The critical value and rejection region with α=0.05 .

c.

To determine

To find: The standardized test statistic z.

d.

To determine

To decide: Whether to reject or fail to reject the null hypothesis at a level of significance of α=0.05 .

e.

To determine

To interpret: The decision in the context of the original claim.

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Answer 5

Chapter 8.4, Problem 11E

a.

To determine

To identify: The claim and state H0 and Ha .

b.

To determine

To find: The critical value and rejection region with α=0.05 .

c.

To determine

To find: The standardized test statistic z.

d.

To determine

To decide: Whether to reject or fail to reject the null hypothesis at a level of significance of α=0.05 .

e.

To determine

To interpret: The decision in the context of the original claim.

Answer 6

Chapter 8.4, Problem 11E

a.

To determine

To identify: The claim and state H0 and Ha .

Answer 7

Chapter 8.4, Problem 11E

a.

To determine

To identify: The claim and state H0 and Ha .

Answer 8

b.

To determine

To find: The critical value and rejection region with α=0.05 .

Answer 9

b.

To determine

To find: The critical value and rejection region with α=0.05 .

Answer 10

c.

To determine

To find: The standardized test statistic z.

Answer 11

c.

To determine

To find: The standardized test statistic z.

Answer 12

d.

To determine

To decide: Whether to reject or fail to reject the null hypothesis at a level of significance of α=0.05 .

Answer 13

d.

To determine

To decide: Whether to reject or fail to reject the null hypothesis at a level of significance of α=0.05 .

Answer 14

e.

To determine

To interpret: The decision in the context of the original claim.

Answer 15

e.

To determine

To interpret: The decision in the context of the original claim.

Answer 16

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Answer 17

Expert Solution & Answer

Answer 18

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Answer 19

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The claim and state H 0 and H a .

Solution Summary: The claim is that the proportion of drivers who wear seat belts is greater in the West than in Northeast

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To identify: The claim and state H0 and Ha .

To find: The critical value and rejection region with α=0.05 .

To find: The standardized test statistic z.

To decide: Whether to reject or fail to reject the null hypothesis at a level of significance of α=0.05 .

To interpret: The decision in the context of the original claim.

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Chapter 8 Solutions