Answer Happy

QUESTION 11 GMAT Scores A recent college graduate is in the process of deciding which one of three graduate schools he should apply to. He decides to judge the quality of the schools on the basis of the Graduate Management Admission Test (GMAT) scores of those who are accepted into the school. A random sample of six students in each school produced the following GMAT scores. Assume that the data are normally distributed with equal variances for each school. School 1 650 620 630 580 710 690 GMAT Scores School 2 510 550 700 630 600 650 School 3 590 510 520 500 490 550 Use this given to answer the next three questions Calculate the mean square for treatments: O a. 26,756 O b.27.756 OC 25,756 O d. 23,756

QUESTION 12 Using the GMAT example, calculate now the mean square for error (MSE): O a. 2,860 ob. 2,660 O c. 2.760 d. 2,960 QUESTION 13 Using the GMAT exercise, calculate the ANOVA F-statistic and interpret the test at 5% significance level O a. The F-statistic is 8.61; we do not reject HO and conclude that GMAT means are equal. b. The F-statistic is 8.61; we reject H0 and conclude that GMAT means are equal O c The F-statistic is 8.61: we reject Ho and conclude that at least 2 GMAT means are different. d. The F-statistic is 8.61; we do not reject HO and conclude that at least 2 GMAT means are different.

QUESTION 14 Assume the following grades on a quiz in statistics for 2 groups of students: Female students: 5, 7.9.10 Male students: 7, 4, 6, 10, 8, 9 Use this given to answer the next 2 questions: We would like to test using the Wilcoxon rank sum test whether the 2 populations have the same location or not. Calculate the rank sum of the 2 samples. a. T(female)-20.5 and T(male)-31.5 O b. Tímale)-20.5 and T(female)-31.5 Oc. T(female) -23.5 and Timale)-31.5 Od. Tímale)-23.5 and T(female)-31.5 QUESTION 15 Assume the previous given test at 5% significance level whether the 2 groups of students have the same population location for their grades O a. The rank sum test statistic is 31.5 and we reject Ho. O b. The rank sum test statistic is 31.5 and we do not reject Ho. c. The rank sum test statistic is 23.5 and we do not reject HO. Od. The rank sum test statistic is 23.5 and we reject HO.