Question: Construct a 95% confidence interval for the population mean, based on the numbers 1, 2, 3, 4, 5, 6 and 20. Change the number 20

Construct a 95% confidence interval for the population mean, based on the numbers 1, 2, 3, 4, 5, 6 and 20. Change the number 20 to 7 and recalculate the confidence interval. Using these results, describe the effect of an outlier (i.e. extreme value) on the confidence interval.

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