Refer to the previous exercise about the study of the
relationship between level of physical activity and aging. Suppose that the
observed cell counts were actually half as small as those reported in the
original study.
 a. Without carrying out any extensive calculations, say
whether the p-value would increase, decrease, or stay the same. Explain your
reasoning.
 b. Without carrying out any extensive calculations, say
what the value of the chi-square statistic would be. Explain your reasoning.
 c. Would the evidence in support of an association between
physical activity and healthy aging for people such as the ones in the study be
stronger or weaker compared to the original study? Explain how you are
deciding.
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