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A simple random sample of size n equals 40 n=40 is drawn from a population. The sample mean is found to be x overbar equals 120.9 x=120.9 and the...

A simple random sample of size n equals 40


n=40 is drawn from a population. The sample mean is found to be x overbar equals 120.9


x=120.9 and the sample standard deviation is found to be s equals 13.2


s=13.2. Construct a​ 99% confidence interval for the population mean.

The lower bound is

nothing


.

Top Answer

Confidence interval for the mean is given by the formula CI =x̄ + t α/2 *s/ sqrt(n) In your... View the full answer

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