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

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


11.64,   42.12, 29.66, 24.14,   24.59,   28.26,   29.12,   25.68.

Find the lower bound of a 98% confidence interval for the true mean amount of money individuals carry with them to thrift stores, to two decimal places. Take all calculations toward the final answer to three decimal places.

Math   Statistics-And-Probability   
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