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In a random sample of 20 people, the mean commute time to work was 32.9 minutes and the standard deviation was 7.3 minutes. Assume the

In a random sample of 20 people, the mean commute time to work was 32.9 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 95% confidence interval for the population mean U . What is the margin of error of U? Interpret the results.

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