Weekly wages at a certain factory arenormally distributed with a mean of$400 and a standard deviation of $50.Find the probability that a workerselected at random makes between$250 and $300.
[tex]\begin{gathered} \text{Normal distribution} \\ \operatorname{mean}\text{ }\mu=400 \\ \text{standard deviation }\sigma=50 \\ In\text{ order to find the probability, we must use the Z-score:} \end{gathered}[/tex][tex]\begin{gathered} P(250
