Question $10($Mandatory$)(10$ points$)$

Assume that a process has a company$-$established specification for variation set at $4\mathrm{.}00$ minutes. Assume

that a well$-$designed, well$-$implemented random sample of $150$ process time measurements was collected.

The mean time was $97\mathrm{.}3$ minutes, with a standard deviation of $4\mathrm{.}77$ minutes. Using the company established

significance level of $\mathrm{.}07,$ is the process probably operating within its company$-$established specification?

Yes

No

There is insufficient information to answer this question

All of the choices above