Green Behavior: Purchasing Habits A recent Harris Poll on green behavior showed that 25% of adults often

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Green Behavior: Purchasing Habits A recent Harris Poll on green behavior showed that 25% of adults often purchase used items instead of new ones. Consider a random sample of 75 adults. Let ˆp be the sample proportion of adults who often purchase used instead of new items.

(a) Is it appropriate to approximate the ˆp distribution with a normal distribution? Explain.

(b) What are the values of mˆp and s ˆp?

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Understandable Statistics Concepts And Methods

ISBN: 9780357719176

13th Edition

Authors: Charles Henry Brase, Corrinne Pellillo Brase

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