Question

A fitness course claims that it can improve an individual's physical ability. To test the effect of a physical fitness course on one's physical ability, the number of sit-ups that a person could do in one minute, both before and after the course, was recorded. Ten individuals are randomly selected to participate in the course. The results are displayed in the following table. Can it be concluded, from the data, that participation in the physical fitness course resulted in significant improvement? Let d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course) d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course) . Use a significance level of α=0.01 α=0.01 for the test. Assume that the numbers of sit-ups are normally distributed for the population both before and after taking the fitness course. Sit-ups before 21 24 41 52 51 26 21 41 48 35 Sit-ups after 36 28 53 55 58 28 38 49 57 42 Copy Data Step 4 of 5: Determine the decision rule for rejecting the null hypothesis H 0 H0 . Round the numerical portion of your answer to three decimal places. Answer 2 Points

Answer 1

tc = + 2.821