QUESTION $17$

A procees is in statistical control with a $\stackrel{}{x}=39\mathrm{.}7$ and $\frac{?}{\text{b}\text{a}\text{r}}(R)=2\mathrm{.}5$ and $n=3.$ The process specifications are at $40+-5,$ The quality characteristic has a normal distribution.

What is actual process capability?

QUESTION $18$

A process is in control with $\stackrel{}{x}=100$ and $\frac{?}{\text{b}\text{a}\text{r}}(R)=2\mathrm{.}6$ and samples of size $5.$ The process specifications are at $95+-10.$ The quality characteristic has a normal distribution.

Estimate the actual capability index for this process.