Question

Full Moon Some people believe a full moon elicits unusual behavior in people. The table shows the number of arrests made in a smal town during six weeks of full moons and six other randomly selected weeks Violent in the same year. A researcher wondered if there was evidence of a difference in the types of illegal Property activity that take place. Complete parts (a) through (c) below Not Full 4 19 21 20 13 Drugs /Alcohol Domestic Abuse 25 12 Other a) Will the researcher test goodness-of-fit, homogeneity, or independence? O A. Independence O B. Goodness-of-fit O C. Homogeneity b) Write the appropriate hypotheses OA. H The distributions of crimes are different for the different moon phases HA: The distribution of crimes is the same for both phases of the moon. OB. Ho Crimes committed are uniformly distributed over each category HA: Crimes committed are not uniformly distributed over each category. O C. Ho: Crimes committed and phases of the moon are independent. HA: Crimes committed depend on phases of the moon. O D. H: The distribution of crimes is the same for both phases of the moon HA: The distributions of crimes are different for the different moon phases C) Find the expected counts for each cell Not Full Full Moon Violent Property Drugs/Alcohol Domestic Abus er (Round to two decimal places as needed.) Explain why the chi-square procedures are not appropriate for this table. Select all that apply A. Since some of the cells have expected counts less than 5, the chi-square procedures are not appropriate B. Since the sample is greater than 10% of the population, the chi-square procedures are not appropriate □ C. Since the data are not counts for the categories, the chi-square procedures are not appropriate D. Since the classes were not sampled at random, the chi-square procedures are not appropriate.

Answer 1

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