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How do I define the the population and select a simple random sample of size n from the population?

A random sample of n=12 values taken from a normally distributed population resulted in the following sample value:

107 109 99 91 103 105
105 94 107 94 97 113

Use the sample information to construct a 95% confidence interval estimate for the population mean.

I know the confidence level is 95% then I know how to compute the sample mean but not the sample standard deviation

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9375137

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