what is P-value? fail to reject or reject? is there sufficient evidence? confidence interval? does the confidence interval support the conclusion found with the hypothesis test?

A study was done on proctored and nonproctored tests. The results are shown in the table. Assume that the two samples are independent Proctored Nonproctored simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are H1 H2 equal. Complete parts (a) and (b) below. n 34 31 X 76.18 84.85 S 11.05 18.66 a. Use a 0.05 significance level to test the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. What are the null and alternative hypotheses? O A. Ho: H1 * H2 OB. Ho: H1 = H2 H1: H1

H2 O C. Ho: H1 = H2 D. HO: H1 = H2 H1: H1 # H2 H1: H1