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
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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