In a study of proctored and nonproctored exams in am online class, researchers obtained the following data.Group One (Proctored): n = 30, x bar = 73.4, s = 11.92 Group Two (Unproctored): n = 32, x bar = 86.6, s= 15.4 Test the claim that unproctored students did better than the proctored students at the 0.05 significance level.(Do not assume the population standard deviations are equal.) State the null and alternative hypothesis.
Find the test statistic.
Find the P-value or critical value.
Make a conclusion about this claim.