The claim and state H 0 and H a .

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Answer 1

Question

Chapter 8.3, Problem 12E

a.

To determine

To identify: The claim and state H0 and Ha.

b.

To determine

To find: The critical value and rejection regions.

c.

To determine

To find: The value of d¯ and sd.

d.

To determine

To find: The standardized test statistic t.

e.

To determine

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

f.

To determine

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

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You may need to use the appropriate appendix table or technology to answer this question. You are given the following information obtained from a random sample of 4 observations. 24 48 31 57 You want to determine whether or not the mean of the population from which this sample was taken is significantly different from 49. (Assume the population is normally distributed.) (a) State the null and the alternative hypotheses. (Enter != for ≠ as needed.) H0: Ha: (b) Determine the test statistic. (Round your answer to three decimal places.) (c) Determine the p-value, and at the 5% level of significance, test to determine whether or not the mean of the population is significantly different from 49. Find the p-value. (Round your answer to four decimal places.) p-value = State your conclusion. Reject H0. There is insufficient evidence to conclude that the mean of the population is different from 49.Do not reject H0. There is sufficient evidence to conclude that the…

Answer 2

Question

Chapter 8.3, Problem 12E

a.

To determine

To identify: The claim and state H0 and Ha.

b.

To determine

To find: The critical value and rejection regions.

c.

To determine

To find: The value of d¯ and sd.

d.

To determine

To find: The standardized test statistic t.

e.

To determine

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

f.

To determine

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

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Answer 3

Question

Chapter 8.3, Problem 12E

a.

To determine

To identify: The claim and state H0 and Ha.

b.

To determine

To find: The critical value and rejection regions.

c.

To determine

To find: The value of d¯ and sd.

d.

To determine

To find: The standardized test statistic t.

e.

To determine

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

f.

To determine

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

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Answer 4

Question

Chapter 8.3, Problem 12E

a.

To determine

To identify: The claim and state H0 and Ha.

b.

To determine

To find: The critical value and rejection regions.

c.

To determine

To find: The value of d¯ and sd.

d.

To determine

To find: The standardized test statistic t.

e.

To determine

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

f.

To determine

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

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Answer 5

Chapter 8.3, Problem 12E

a.

To determine

To identify: The claim and state H0 and Ha.

b.

To determine

To find: The critical value and rejection regions.

c.

To determine

To find: The value of d¯ and sd.

d.

To determine

To find: The standardized test statistic t.

e.

To determine

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

f.

To determine

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

Answer 6

Chapter 8.3, Problem 12E

a.

To determine

To identify: The claim and state H0 and Ha.

Answer 7

Chapter 8.3, Problem 12E

a.

To determine

To identify: The claim and state H0 and Ha.

Answer 8

b.

To determine

To find: The critical value and rejection regions.

Answer 9

b.

To determine

To find: The critical value and rejection regions.

Answer 10

c.

To determine

To find: The value of d¯ and sd.

Answer 11

c.

To determine

To find: The value of d¯ and sd.

Answer 12

d.

To determine

To find: The standardized test statistic t.

Answer 13

d.

To determine

To find: The standardized test statistic t.

Answer 14

e.

To determine

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

Answer 15

e.

To determine

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

Answer 16

f.

To determine

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

Answer 17

f.

To determine

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

Answer 18

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Answer 19

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Answer 20

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Answer 21

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The claim and state H 0 and H a .

Solution Summary: The claim is that a baseball clinic will help players raise their batting averages.

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To identify: The claim and state H0 and Ha.

To find: The critical value and rejection regions.

To find: The value of d¯ and sd.

To find: The standardized test statistic t.

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

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

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Chapter 8 Solutions