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28 April, 10:46

In a random sample of 20 people, the mean commute time to work was 33.5 minutes and the standard deviation was

7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean

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  1. 28 April, 11:10
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    Construct the confidence interval for the population mean it using a t-distribution ... In a random sample of eight people, the mean commute time to work was 35.5 minutes and the sample standard deviation was. 7.2 minutes ... Use a t-distribution to find the margin of error and construct a 95% ... Assume normal distribution.
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