The upper and lower customer specified limits for a component are $6\mathrm{.}40$ and $5\mathrm{.}20$ inches respectively. The process standard deviation is $0\mathrm{.}20,$ and the process average is $5\mathrm{.}70$ inches.

$2\mathrm{.}67$

$6\mathrm{.}23$

$1\mathrm{.}56$

$1\mathrm{.}00$