A quality characteristic of product $A$ is a normally distributed random variable $({}_0=8,{}_0=2).$

The process shifts to a new situation such that $({}_1=7,{}_1=2\mathrm{.}2).$ Use process allowances as $\backslash$pm $3$

$cm$ to find the fraction of the percentage of non$-$conforming. Show the necessary drawings

Solution