Given That the Random Variable X Is Normally Distributed with a Mean

Short Answer

Given that the random variable X is normally distributed with a mean of 20 and a standard deviation of 7, P(28 $\le$ X $\le$ 30) is: $\begin{array}{|l|l|}\hline \text { A. } & 2 \\\hline \text { B. } & 0.0507 . \\\hline \text { C. } & 0.8729 \\\hline \text { D. } & 0.9236 \\\hline\end{array}$