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The mean number of hours of part-time work per week for a sample of 133 high-school students is 27. If the margin of error for
The mean number of hours of part-time work per week for a sample of 133 high-school students is 27. If the margin of error for the population mean with a 98% confidence interval is 2.4, construct a 98% confidence interval for the mean number of hours of part-time work per week for all high-school students.
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