In a random sample of seven people, the mean driving distance to work was 21.4 miles and the standard deviation was 6.1 miles. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 99% confidence interval for the population mean ?. Interpret the results. Identify the margin of error. 8.7 miles (Round to one decimal place as needed.) Construct a 99% confidence interval for the population mean. (Round to one decimal place as needed.)
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Sample size (n) = 7 Sample mean (x̄) = 21.4 miles Sample standard deviation (s) = 6 miles Confidence level = 99% Show more…
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