Determine the decision criterion for rejecting the null hypothesis in the given hypothesis test; i.e., describe the values of the test statistic that would result in rejection of the null hypothesis.

We wish to compare the means of two populations using paired observations. Suppose that d-bar = 3.125, Sd = 2.911, and n = 8, and that you wish to test the following hypothesis at the 10% level of significance:

H0: d = 0 against H1: d > 0.

What decision rule would you use?

Select one:

a. Reject H0 if test statistic is less than 1.415.b. Reject H0 if test statistic is greater than -1.415 and less than 1.415.c. Reject H0 if test statistic is greater than 1.415.d. Reject H0 if test statistic is greater than -1.415.