|Proctored Nonproctored H2 A study was done on proctored and nonproctored tests. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts 31 33 (a) and (b) below. Use a 0.01 significance level for both parts. 74.93 83.62 S 10.39 20.41 a. 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? OA. Ho: H1 > H2 OB. HO: HIS H2 H1: 15 H2 H 1 : 1 1 > H2 O C. Ho: H12 H2 OD. HO: H1 = H2 H1: H1