The claim; and to state H 0 and H 1

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Answer 1

Question

Chapter 11.1, Problem 25E

a.

To determine

To identify: The claim; and to state H0 and H1

b.

To determine

To find: The critical value.

c.

To determine

To find: The test statistic.

d.

To determine

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

α=0.01 .

e.

To determine

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

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A retail chain is interested in determining whether a digital video point-of-purchase (POP) display would stimulate higher sales for a brand advertised compared to the standard cardboard point-of-purchase display. To test this, a one-shot static group design experiment was conducted over a four-week period in 100 different stores. Fifty stores were randomly assigned to the control treatment (standard display) and the other 50 stores were randomly assigned to the experimental treatment (digital display). Compare the sales of the control group (standard POP) to the experimental group (digital POP). What were the average sales for the standard POP display (control group)? What were the sales for the digital display (experimental group)? What is the (mean) difference in sales between the experimental group and control group? List the null hypothesis being tested. Do you reject or retain the null hypothesis based on the results of the independent t-test? Was the difference between the…

What were the average sales for the four weeks prior to the experiment? What were the sales during the four weeks when the stores used the digital display? What is the mean difference in sales between the experimental and regular POP time periods? State the null hypothesis being tested by the paired sample t-test. Do you reject or retain the null hypothesis? At a 95% significance level, was the difference significant? Explain why or why not using the results from the paired sample t-test. Should the manager of the retail chain install new digital displays in each store? Justify your answer.

A retail chain is interested in determining whether a digital video point-of-purchase (POP) display would stimulate higher sales for a brand advertised compared to the standard cardboard point-of-purchase display. To test this, a one-shot static group design experiment was conducted over a four-week period in 100 different stores. Fifty stores were randomly assigned to the control treatment (standard display) and the other 50 stores were randomly assigned to the experimental treatment (digital display). Compare the sales of the control group (standard POP) to the experimental group (digital POP). What were the average sales for the standard POP display (control group)? What were the sales for the digital display (experimental group)? What is the (mean) difference in sales between the experimental group and control group? List the null hypothesis being tested. Do you reject or retain the null hypothesis based on the results of the independent t-test? Was the difference between the…

Answer 2

Question

Chapter 11.1, Problem 25E

a.

To determine

To identify: The claim; and to state H0 and H1

b.

To determine

To find: The critical value.

c.

To determine

To find: The test statistic.

d.

To determine

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

α=0.01 .

e.

To determine

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

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Answer 3

Question

Chapter 11.1, Problem 25E

a.

To determine

To identify: The claim; and to state H0 and H1

b.

To determine

To find: The critical value.

c.

To determine

To find: The test statistic.

d.

To determine

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

α=0.01 .

e.

To determine

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

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Answer 4

Question

Chapter 11.1, Problem 25E

a.

To determine

To identify: The claim; and to state H0 and H1

b.

To determine

To find: The critical value.

c.

To determine

To find: The test statistic.

d.

To determine

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

α=0.01 .

e.

To determine

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

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Answer 5

Chapter 11.1, Problem 25E

a.

To determine

To identify: The claim; and to state H0 and H1

b.

To determine

To find: The critical value.

c.

To determine

To find: The test statistic.

d.

To determine

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

α=0.01 .

e.

To determine

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

Answer 6

Chapter 11.1, Problem 25E

a.

To determine

To identify: The claim; and to state H0 and H1

Answer 7

Chapter 11.1, Problem 25E

a.

To determine

To identify: The claim; and to state H0 and H1

Answer 8

b.

To determine

To find: The critical value.

Answer 9

b.

To determine

To find: The critical value.

Answer 10

c.

To determine

To find: The test statistic.

Answer 11

c.

To determine

To find: The test statistic.

Answer 12

d.

To determine

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

α=0.01 .

Answer 13

d.

To determine

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

α=0.01 .

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

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Answer 18

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Answer 19

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 to state H 0 and H 1

To identify: The claim; and to state H0 and H1

To find: The critical value.

To find: The test statistic.

To decide: Whether to reject or fail to reject the null hypothesis at a level of significance α=0.01 .

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

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Chapter 11 Solutions

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

α=0.01 .