11. Suppose you wish to test the claim that d, the mean value of the differences d for a population of paired data, is greater than 0. Given a sample of n=15 and a significance level of =0.01, what decision criterion would be used for rejecting the null hypothesis? A. Reject the null hypothesis if the computed test statistic is 2.624. B. Reject the null hypothesis if the computed test statistic is 2.602. C. Reject the null hypothesis if the computed test statistic is 2.624. D. Reject the null hypothesis if the computed test statistic is 2.977 or -2.977.

For No. 12 to No. 16, refer to the image:

Hours 5 10 4 6 10 Score 54 86 69 86 59 87Source of Variation Sum of Squares Degree of freedom Treatment (Among Groups) 38.283 2 Error (Within Groups) 27.050 12