A recent study (Snack Ads Spur Children to Eat More, The NewYork Times, July 20, 2009, p.
Question:
a. Assuming that the population variances are equal and α = 0.05, is there evidence that the mean amount of Goldfish crackers eaten was significantly higher for the children who watched food ads?
b. Assuming that the population variances are equal, construct a 95% confidence interval estimate of the difference between the mean amount of Goldfish crackers eaten by the children who watched and did not watch the food ad.
c. Compare the results of (a) and (b) and discuss.
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Related Book For
Basic Business Statistics Concepts And Applications
ISBN: 9780132168380
12th Edition
Authors: Mark L. Berenson, David M. Levine, Timothy C. Krehbiel
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