The article Caffeine Knowledge, Attitudes, and
Chapter 8, Problem 63(choose chapter or problem)
The article Caffeine Knowledge, Attitudes, and Consumptionin Adult Women (J. of Nutrition Educ.,1992: 179184) reports the following summary data ondaily caffeine consumption for a sample of adult women:n 5 47, x 5 215 mg, s 5 235 mg, and range 5 521176.a. Does it appear plausible that the population distributionof daily caffeine consumption is normal? Isit necessary to assume a normal population distributionto test hypotheses about the value of the populationmean consumption? Explain your reasoning.b. Suppose it had previously been believed that meanconsumption was at most 200 mg. Does the givendata contradict this prior belief? Test the appropriatehypotheses at significance level .10.
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