The sample standard deviation was 8.2 hours. what is the 95, Ask an Expert

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A survey by day times found that u.s men work a mean of 52 hours a week. Assume the survey used a sample of 650 men and that the sample standard deviation was 8.2 hours. what is the 95% confidence interval for the mean number of hours worked per week for the population of u.s men?

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