Business stats

The mean exam score for 44 male high school students is 22.0 and the population standard deviation is 5.5. The mean exam score for 54 female high school students is 19.4 and the population standard deviation is 4.5. At a = 0.01, can you reject the daim that male and female high school students have equal exam scores? Complete parts (a) through (e). Click here to view page 1 of the standard normal distribution table Click here to view page 2 of the standard normal distribution table, () Identify the claim and state Ho and H. What is the claim? O A. Male high school students have lower exam scores than female students O B. Male high school students have greater exam scores than female students. C. Male and female high school students have different exam scores O D. Male and female high school students have equal exam scores What are Ho and H.7 OA HO My SH2 OC. Ho My = 12 H2 141 2 1/2 OD. Ho P1 2142 O E. HO H, > 12 OF HO My * H2 (b) Find the critical value(s) and identify the rejection region(s). The critical value(s) is/are (Round to two decimal places as needed. Use a comma to separate answers as needed.) What is/are the rejection region(s)? OA. z 1.04 OB. z-233 OC. z258 O D. Z*1.64 OE z2.58 OG. z* -3.08, z> -3.08 OH. 2x -308 (c) Find the standardized test statistic z for my -12 = =(Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below O A. Fail to reject Ho. The standardized test statistic is not in the rejection region, equal to O B. Reject Hy The standardized test statistic is not in the rejection region. different from O C. Reject Ho The stan st statistic is in the rejection region. greater than O D. Fail to reject Ho. The standardized test statistic is in the rejection region. ess than (e) Interpret the decision in the context of the original claim. At the %% significance level. there is evidence to V the claim that male high school students have exam scores V female high school students' exam scores Next O Type here to search 67'F Sunny ~x 9:51 AM -6/28/2022 10