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 (a) and (b) below. Use a 0.01 significance level for both parts. Proctored Nonproctored μ H1 H2 n 31 30 x 75.28 88.99 11.28 20.49 b. Construct a confidence interval suitable for testing the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. << (Round to two decimal places as needed.) Does the confidence interval support the conclusion of the test? because the confidence interval contains