The manufacturer of a new eye cream claims that the cream reduces the appearance of fine lines and wrinkles after just 1414 days of application. To test the claim, 1010 women are randomly selected to participate in a study. The number of fine lines and wrinkles that are visible around each participant’s eyes is recorded before and after the 1414 days of treatment. The following table displays the results. Test the claim at the 0.050.05 level of significance assuming that the population distribution of the paired differences is approximately normal. Let women before the treatment be Population 1 and let women after the treatment be Population 2. Number of Fine Lines and Wrinkles Before 12 11 10 14 12 9 12 14 9 12 After 13 8 6 14 11 6 13 11 5 11 Step 2 of 3 : Compute the value of the test statistic. Round your answer to three decimal places.
The manufacturer of a new eye cream claims that the cream reduces the appearance of fine lines and wrinkles after just 1414 days of application. To test the claim, 1010 women are randomly selected to participate in a study. The number of fine lines and wrinkles that are visible around each participant’s eyes is recorded before and after the 1414 days of treatment. The following table displays the results. Test the claim at the 0.050.05 level of significance assuming that the population distribution of the paired differences is approximately normal. Let women before the treatment be Population 1 and let women after the treatment be Population 2. Number of Fine Lines and Wrinkles Before 12 11 10 14 12 9 12 14 9 12 After 13 8 6 14 11 6 13 11 5 11 Step 2 of 3 : Compute the value of the test statistic. Round your answer to three decimal places.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
The manufacturer of a new eye cream claims that the cream reduces the appearance of fine lines and wrinkles after just 1414 days of application. To test the claim, 1010 women are randomly selected to participate in a study. The number of fine lines and wrinkles that are visible around each participant’s eyes is recorded before and after the 1414 days of treatment. The following table displays the results. Test the claim at the 0.050.05 level of significance assuming that the population distribution of the paired differences is approximately normal. Let women before the treatment be Population 1 and let women after the treatment be Population 2.
Number of Fine Lines and Wrinkles
| Before | 12 | 11 | 10 | 14 | 12 | 9 | 12 | 14 | 9 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|
| After | 13 | 8 | 6 | 14 | 11 | 6 | 13 | 11 | 5 | 11 |
Step 2 of 3 :
Compute the value of the test statistic. Round your answer to three decimal places.
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