Question: The Paper “Caffeine Knowledge, Attitudes, and Consumption in Adult Women” (J of Nutrition Educ. (1992):pp.179--184) reported the following summary data on daily caffeine consumption for a sample of forty-nine adult women.

a) Does it appear plausible that the population distribution of daily caffeine consumption is normal? Explain

b) Is it necessary to assume a normal population distribution to estimate the value of the population mean consumption ?? Explain.

c) Suppose it had previously been believed that mean consumption ? was at most 180 mg. Does the given data contradict this prior belief? Explain.