Dr. Mack Lemore, an expert in consumer behavior, wants to estimate the average amount of money...

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Dr. Mack Lemore, an expert in consumer behavior, wants toestimate the average amount of money that people spend in thriftshops. He takes a small sample of 8 individuals and asks them toreport how much money they had in their pockets the last time theywent shopping at a thrift store. Here are the data:


27, 22, 11, 19, 20, 19, 25, 21.

Find the upper bound of a 95% confidence intervalfor the true mean amount of money individuals carry with them tothrift stores, to two decimal places. Take all calculationstoward the final answer to three decimal places.

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Solutionxx22772922484111211936120400193612562521441x164x23522The sample mean is Mean x n 272211 19    See Answer
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