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Construct an 80​% confidence interval to estimate the population mean when x overbar=131 and s​ =...

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Basic Math

Construct an 80​% confidence interval to estimate the populationmean when x overbar=131 and s​ = 28 for the sample sizes below.​

a) n=20

​b) n=50 ​

c) n=80

Answer & Explanation Solved by verified expert
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Solution Given thatPoint estimate sample mean 131sample standard deviation s 28a sample size n 20Degrees of freedom df n 1 20 1 19At 80 confidence    See Answer
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