ULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the estion. 1) The following data was collected as part of a study examining whether there is a difference between the number of hours men and women watch television. The values represent the number of hours a subject watched television on a designated Monday night. Lower values rank ahead of higher ones. Calculate R,R and the z test value for the Wilcoxon rank sum test. A) R=12.25,R=150,z=0.79 B) uR=150,R=5,z=4 C) R=12.25,R=12.25,z=9.61 D) uR=150,R=17.32,z=1.15 2) Six second-graders tried tossing a ball into a basket ten times each. Their teacher then suggested a different way of tossing the ball, and the six students tried again. The number of successful tosses, before and after the teacher's suggestion, are shown below. Find the sum of the positive and negative rank sums as in a Wilcoxon signed-rank test. A) positive rank sum =4; negative rank sum =2 B) positive rank sum =6; negative rank sum =2 C) positive rank sum =7; negative rank sum =3 D) positive rank sum =2; negative rank sum =1 3) If the test value for a Wilcoxon signed-rank test ws is 15 , the sample size is 12 , and the 3) one-tailed test is to be carried out at the =0.05 level of significance, should the null hypothesis be rejected? Use the table of critical values for the signed-rank test below. I A) Do not reject null hypothesis because the test value 15 is greater than the critical value 14 B) Reject null hypothesis because the test value 15 is less than the critical value 17 . C) Do not reject null hypothesis because the test value 15 is less than the critical value 17 D) Reject null hypothesis because the test value 15 is greater than the critical value 14 HORT ANSWER. Write the word or phrase that best completes each statement or answers the uestion. 4) Eight subjects were weighed before and after a new three-week "healthy" diet. 4) At the 0.05 level of significance, can it be concluded that a difference in weight resulted? (Weights are in pounds.) 5) An instructor divided her class into four groups and asked them to keep track of the numberof soft drinks that they consume per week. The data has been ranked a the sums determined for each group. The sums of the ranks for the four groups is as follows: RA=51.5;RB=48.5;RC=45.5;RD=64.5 Complete the Kruskal-Wallis test to determine if the hypothesis that the different groups consume the same amount of soft drinks per week is valid at =0.05