19.9 Randomly selected records of 140 convicted criminals reveal that their crimes were committed on the following days of the week:DAYS WHEN CRIMES WERE COMMITTEDFREQUENCYMON.TUE.WED.THU.FRI.SAT.SUN.TOTALObserved (fo)17212218232415140Witte11e_c19.indd 38211/18/2016 6:23:03 PMCopyright 2017 John Wiley & Sons, Inc. REVIEW QUESTIONS 383 (a) Using the .01 level of significance, test the null hypothesis that in the underlyingpopulation, crimes are equally likely to be committed on any day of the week. (b) Specify the approximate p-value for this test result. (c) How might this result be reported in the literature?

19.16 Test the null hypothesis at the .01 level of significance that the distribution of bloodtypes for college students complies with the proportions described in the blood bank bulletin, namely, .44 for O, .41 for A, .10 for B, and .05 for AB. Now, however, assume that the results are available for a random sample of only 60 students. The results are as follows: 27 for O, 26 for A, 4 for B, and 3 for AB. NOTE: The expected frequency for AB, (.05)(60) = 3, is less than 5, the smallest permissible expected frequency. Create a sufficiently large expected frequency bycombining B and AB blood types.

Review the three "Non Parametric" test videos in the Calculations section of the "Statistics Visual Learner" media piece.

How would you create a statistical analysis based on the scenario below? Explain. What level of significance would you test at and why?

A researcher is examining preferences among four new flavors of ice cream. A sample ofn= 80 people is obtained. Each person tastes all four flavors and then picks a favorite. The distribution of preferences is as follows. Do these data indicate any significance preferences among the four flavors using the chi-square test?

Ice Cream Flavor

A

B

C

D

12

18

28

22