Question 5 2.86 pts A statistics professor at a large university hypothesizes that students who take statistics in the morning typically do better than those who take it in the afternoon. He takes a random sample of 36 students who took a morning class and, independently, another random sample of 36 students who took an afternoon class. He finds that the morning group scored an average of 74 with a standard deviation of 8, while the evening group scored an average of 68 with a standard deviation of 10. The population standard deviation of scores is unknown but is assumed to be equal for morning and evening classes. Let / and /2 represent the population mean final exam scores of statistics' courses offered in the morning and the afternoon, respectively. Which of the following is(are) the appropriate/reasonable critical value(s) to test the professor's claim at the 5% significance level? O 1.67 O 0.85 1.29 2.38Question 8 2.86 pts The following is an incomplete ANOVA table. Source of Variation SS df MS F Between groups 2 12.5 Within groups Total 100 10 At the 10% significance level, the critical value is O 8.65 4.46 6.06 O 3.11Question 7 2.86 pts A consumer magazine wants to figure out which of two major airlines lost a higher proportion of luggage on international flights. The magazine surveyed Standard Air (population 1) and Down Under airlines (population 2). Standard Air lost 45 out of 600 bags. Down Under airlines lost 27 of 500 bags. Does Standard Air have a higher population proportion of lost bags on international flights? Which of the following is the appropriate p-value? 0.163 O 0.918 0.080 O 0.837