Question

PLEASE HELP Weekly wages at a certain factory are

Answer 1

Answer: 0.0215 .

Step-by-step explanation:

Let X denotes the weekly wages at a certain factory .

It is normally distributed , such that

$X\sim N(\mu=400,\ \sigma= 50)$

Then, the probability that a worker  selected at random makes between

$250 and $300:

$P(250$

Hence,the required probability = 0.0215 .