A Normally Distributed Population with 200 Elements Has a Mean

Short Answer

A normally distributed population with 200 elements has a mean of 60 and a standard deviation of 10. The probability that the mean of a sample of 25 elements taken from this population will be smaller than 56 is: $\begin{array}{|l|l|}\hline \text { A. } & 0.0166 . \\\hline \text { B. } & 0.0228 . \\\hline \text { C. } & 0.3708 \\\hline \text { D. } & 0.0394 . \\\hline\end{array}$