Question 1 : Compute the value of the test statistic. Round your answer to three decimal places. Additionally Question 2: Draw a conclusion and interpret the decision.
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 participants eyes is recorded before and after the 14 days of treatment. The following table displays the results. Test the claim at the 0.02 level of significance assuming that the population distribution of the paired differences is approximately normal. Let women before the treatment be Population 2.
Before: 10, 11, 14, 11, 9, 11, 12, 14, 11, 14
After: 8, 11, 13 , 11, 5, 7, 13, 12, 8, 10
Question 1 : Compute the value of the test statistic. Round your answer to three decimal places. Additionally
Question 2: Draw a conclusion and interpret the decision.
Step by step
Solved in 3 steps with 12 images
