The upper and lower specifications for a service are

$11\mathrm{.}511\mathrm{.}5$

min. and

$8\mathrm{.}58\mathrm{.}5$

$$min$.,$ respectively. The process average is

$9\mathrm{.}509\mathrm{.}50$

min. If

$66-$sigma

process capability is$$ desired, what should the process mean and standard deviation$$ be$?$

The process mean should be

enter your response here.

$($Enter your response rounded to $2$ decimal$$ places.$)$

The process standard deviation should be

enter your response here.

$($Enter your response rounded to $4$ decimal$$ places.$)$