Refer to the previous exercise about the study of different HIV intervention programs. Suppose that the observed cell counts were actually twice as big as those reported in the original study. For parts (a)€“(c): How, if at all, would the values of the following change?
a. The expected cell counts:                             Increase Decrease Stay the same
b. The chi-square statistic:                                Increase Decrease Stay the same
c. The p-value:                                                     Increase Decrease Stay the same
d. Would the evidence in support of an association between type of HIV intervention program and consistent condom usage among adolescents such as the ones in the study be stronger or weaker compared to the original study? Explain how you are deciding.

Data from previous exercise

Data from previous exercise

Researchers Jemmott III et al. (Journal of American Medical Association, 1998) reported a study in which a group of inner-city African American adolescents from Philadelphia were randomly divided into three groups as part of an experiment to assess the effectiveness of different HIV prevention programs. One group was given €œabstinence HIV intervention,€ the next group was given €œsafer-sex HIV intervention,€ and the third group was given €œhealth promotion intervention,€ which was to serve as a control. One outcome that was measured was whether subjects who were sexually active during a three-month period reported consistent condom use. The following table shows the summarized data.

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Safer-sex intervention 20 Abstinence Total Control 21 20 41 intervention 14 Yes 55 Consistent condom use? 52 No 20 12 Total 107 34 32