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Thanksgiving spending, Part II. Exercise 4.14 provides a 95% confidence interval for the average spending by American adults during the six-day period after Thanksgiving 2009: ($80.31, $89.11). (a) A local news anchor claims that the average spending during this period in 2009 was $100. What do you think of her claim? (b) Would the news anchor’s claim be considered reasonable based on a 90% confidence interval? Why or why not? (Do not actually calculate the interval.)
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Thanksgiving spending, Part II. Exercise 4.14 provides a 95% confidence interval for the average spe...
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