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The manager of the local health club is interested in determining

the number of times members use the weight room per month. She takes a random sample of 15 members and finds that over the course of a month, the average number of visits was 11.2 with a standard deviation of 3.2. Assuming that the monthly number of visits is normally distributed, find a 95% confidence interval for the average monthly usage of all health club members?

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The manager of the local health club is interested in determining the number of times members use the weight room per month. She takes a random
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