Check whether the data provide sufficient evidence to conclude that IQs measured on the scale have a standard deviation that is different from 16 points by performing the required hypothesis test at the 10% significance level.

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Answer 1

Question

Chapter 11, Problem 17RP

a.

To determine

Check whether the data provide sufficient evidence to conclude that IQs measured on the scale have a standard deviation that is different from 16 points by performing the required hypothesis test at the 10% significance level.

b.

To determine

Explain how crucial the normality assumption is for the hypothesis test you performed in part (a).

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Answer 2

Question

Chapter 11, Problem 17RP

a.

To determine

Check whether the data provide sufficient evidence to conclude that IQs measured on the scale have a standard deviation that is different from 16 points by performing the required hypothesis test at the 10% significance level.

b.

To determine

Explain how crucial the normality assumption is for the hypothesis test you performed in part (a).

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Answer 3

Question

Chapter 11, Problem 17RP

a.

To determine

Check whether the data provide sufficient evidence to conclude that IQs measured on the scale have a standard deviation that is different from 16 points by performing the required hypothesis test at the 10% significance level.

b.

To determine

Explain how crucial the normality assumption is for the hypothesis test you performed in part (a).

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Answer 4

Question

Chapter 11, Problem 17RP

a.

To determine

Check whether the data provide sufficient evidence to conclude that IQs measured on the scale have a standard deviation that is different from 16 points by performing the required hypothesis test at the 10% significance level.

b.

To determine

Explain how crucial the normality assumption is for the hypothesis test you performed in part (a).

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Answer 5

Chapter 11, Problem 17RP

a.

To determine

Check whether the data provide sufficient evidence to conclude that IQs measured on the scale have a standard deviation that is different from 16 points by performing the required hypothesis test at the 10% significance level.

b.

To determine

Explain how crucial the normality assumption is for the hypothesis test you performed in part (a).

Answer 6

Chapter 11, Problem 17RP

a.

To determine

Check whether the data provide sufficient evidence to conclude that IQs measured on the scale have a standard deviation that is different from 16 points by performing the required hypothesis test at the 10% significance level.

Answer 7

Chapter 11, Problem 17RP

a.

To determine

Check whether the data provide sufficient evidence to conclude that IQs measured on the scale have a standard deviation that is different from 16 points by performing the required hypothesis test at the 10% significance level.

Answer 8

b.

To determine

Explain how crucial the normality assumption is for the hypothesis test you performed in part (a).

Answer 9

b.

To determine

Explain how crucial the normality assumption is for the hypothesis test you performed in part (a).

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 11.1 - What is meant by saying that a variable has a...Ch. 11.1 - How are different chi-square distributions...Ch. 11.1 - Two 2-curves have degrees of freedom 12 and 20,...Ch. 11.1 - The t-table has entries for areas of 0.10, 0.05,...Ch. 11.1 - Prob. 5E Ch. 11.1 - Prob. 6E Ch. 11.1 - In Exercises 11.511.2, use Table VII to find the...Ch. 11.1 - Prob. 8E Ch. 11.1 - Prob. 9E Ch. 11.1 - Prob. 10E

Check whether the data provide sufficient evidence to conclude that IQs measured on the scale have a standard deviation that is different from 16 points by performing the required hypothesis test at the 10% significance level.

Solution Summary: The author states the null and alternative hypotheses, stating that the data does not provide sufficient evidence to conclude that IQs measured on the scale have a standard deviation.

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Check whether the data provide sufficient evidence to conclude that IQs measured on the scale have a standard deviation that is different from 16 points by performing the required hypothesis test at the 10% significance level.

Explain how crucial the normality assumption is for the hypothesis test you performed in part (a).

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Chapter 11 Solutions