The claim and state H 0 and H a .

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Answer 1

Question

Chapter 11.2, Problem 7E

a.

To determine

To identify: The claim and state H0 and Ha .

b.

To determine

To decide: Whether to use a Wilcoxon signed-rank test or Wilcoxon rank sum test.

c.

To determine

To find: The critical values.

d.

To determine

To find: The test statistic.

e.

To determine

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

f.

To determine

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

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Suppose you are gambling on a roulette wheel. Each time the wheel is spun, the result is one of the outcomes 0, 1, and so on through 36. Of these outcomes, 18 are red, 18 are black, and 1 is green. On each spin you bet $5 that a red outcome will occur and $1 that the green outcome will occur. If red occurs, you win a net $4. (You win $10 from red and nothing from green.) If green occurs, you win a net $24. (You win $30 from green and nothing from red.) If black occurs, you lose everything you bet for a loss of $6. a. Use simulation to generate 1,000 plays from this strategy. Each play should indicate the net amount won or lost. Then, based on these outcomes, calculate a 95% confidence interval for the total net amount won or lost from 1,000 plays of the game. (Round your answers to two decimal places and if your answer is negative value, enter "minus" sign.) I worked out the Upper Limit, but I can't seem to arrive at the correct answer for the Lower Limit. What is the Lower Limit?…

Let us suppose we have some article reported on a study of potential sources of injury to equine veterinarians conducted at a university veterinary hospital. Forces on the hand were measured for several common activities that veterinarians engage in when examining or treating horses. We will consider the forces on the hands for two tasks, lifting and using ultrasound. Assume that both sample sizes are 6, the sample mean force for lifting was 6.2 pounds with standard deviation 1.5 pounds, and the sample mean force for using ultrasound was 6.4 pounds with standard deviation 0.3 pounds. Assume that the standard deviations are known. Suppose that you wanted to detect a true difference in mean force of 0.25 pounds on the hands for these two activities. Under the null hypothesis, 40 0. What level of type II error would you recommend here? = Round your answer to four decimal places (e.g. 98.7654). Use α = 0.05. β = 0.0594 What sample size would be required? Assume the sample sizes are to be…

Consider the hypothesis test Ho: 0 s² = = 4.5; s² = 2.3. Use a = 0.01. = σ against H₁: 6 > σ2. Suppose that the sample sizes are n₁ = 20 and 2 = 8, and that (a) Test the hypothesis. Round your answers to two decimal places (e.g. 98.76). The test statistic is fo = 1.96 The critical value is f = 6.18 Conclusion: fail to reject the null hypothesis at a = 0.01. (b) Construct the confidence interval on 02/2/622 which can be used to test the hypothesis: (Round your answer to two decimal places (e.g. 98.76).) 035

Answer 2

Question

Chapter 11.2, Problem 7E

a.

To determine

To identify: The claim and state H0 and Ha .

b.

To determine

To decide: Whether to use a Wilcoxon signed-rank test or Wilcoxon rank sum test.

c.

To determine

To find: The critical values.

d.

To determine

To find: The test statistic.

e.

To determine

To decide: Whether to reject or fail to reject the null hypothesis at a level of significance of 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 11.2, Problem 7E

a.

To determine

To identify: The claim and state H0 and Ha .

b.

To determine

To decide: Whether to use a Wilcoxon signed-rank test or Wilcoxon rank sum test.

c.

To determine

To find: The critical values.

d.

To determine

To find: The test statistic.

e.

To determine

To decide: Whether to reject or fail to reject the null hypothesis at a level of significance of 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 11.2, Problem 7E

a.

To determine

To identify: The claim and state H0 and Ha .

b.

To determine

To decide: Whether to use a Wilcoxon signed-rank test or Wilcoxon rank sum test.

c.

To determine

To find: The critical values.

d.

To determine

To find: The test statistic.

e.

To determine

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

f.

To determine

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

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Answer 5

Chapter 11.2, Problem 7E

a.

To determine

To identify: The claim and state H0 and Ha .

b.

To determine

To decide: Whether to use a Wilcoxon signed-rank test or Wilcoxon rank sum test.

c.

To determine

To find: The critical values.

d.

To determine

To find: The test statistic.

e.

To determine

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

f.

To determine

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

Answer 6

Chapter 11.2, Problem 7E

a.

To determine

To identify: The claim and state H0 and Ha .

Answer 7

Chapter 11.2, Problem 7E

a.

To determine

To identify: The claim and state H0 and Ha .

Answer 8

b.

To determine

To decide: Whether to use a Wilcoxon signed-rank test or Wilcoxon rank sum test.

Answer 9

b.

To determine

To decide: Whether to use a Wilcoxon signed-rank test or Wilcoxon rank sum test.

Answer 10

c.

To determine

To find: The critical values.

Answer 11

c.

To determine

To find: The critical values.

Answer 12

d.

To determine

To find: The test statistic.

Answer 13

d.

To determine

To find: The test statistic.

Answer 14

e.

To determine

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

Answer 15

e.

To determine

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

Ch. 11.1 - Prob. 1TY Ch. 11.1 - Prob. 2TY Ch. 11.1 - Prob. 3TY Ch. 11.1 - Prob. 1E Ch. 11.1 - When the sign test is used, what population...Ch. 11.1 - Describe the test statistic for the sign test when...Ch. 11.1 - In your own words, explain why the hypothesis test...Ch. 11.1 - Explain how to use the sign test to test a...Ch. 11.1 - List the two conditions that must be met in order...Ch. 11.1 - Prob. 7E

The claim and state H 0 and H a .

To identify: The claim and state H0 and Ha .

To decide: Whether to use a Wilcoxon signed-rank test or Wilcoxon rank sum test.

To find: The critical values.

To find: The test statistic.

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 11 Solutions