The manufacturer of a new eye cream claims that the cream reduces the appearance of fine lines and wrinkles after just 14 days of application. To test the claim. 10 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 14 days of treatment. The following table displays the results. Test the claim at the 0.05 level of significance assuming that the population distribution of th paired differences is approximately normal. Let women before the treatment be Population 1 and let women after the treatment be Population 2. Before After 12 13 Number of Fine Lines and Wrinkles 12 10 10 13 11 11 9 11 8 11 14 15 Copy Data Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places. 12 10 13 10 11 12

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.3: Least Squares Approximation
Problem 33EQ
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Question 4 of 6, Step 2 of 3
The manufacturer of a new eye cream claims that the cream reduces the appearance of fine lines and wrinkles after just 14 days of application. To test the claim, 10
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 14 days of treatment. The following table displays the results. Test the claim at the 0.05 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.
6/18
Correct
Answer
Number of Fine Lines and Wrinkles
Before 12 10 10 13 11
After 13 11 8 11 9
14
15
Copy Data
Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places.
12 12 10 13
11 10 11
12
Tables
Keypa
Transcribed Image Text:Question 4 of 6, Step 2 of 3 The manufacturer of a new eye cream claims that the cream reduces the appearance of fine lines and wrinkles after just 14 days of application. To test the claim, 10 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 14 days of treatment. The following table displays the results. Test the claim at the 0.05 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. 6/18 Correct Answer Number of Fine Lines and Wrinkles Before 12 10 10 13 11 After 13 11 8 11 9 14 15 Copy Data Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places. 12 12 10 13 11 10 11 12 Tables Keypa
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