$-21.$ A process that produces computer chips has a mean of $\mathrm{.}04$ defective chip and a standard deviation of $\mathrm{.}003$ chip. The allowable variation is from $\mathrm{.}03$ to $\mathrm{.}05$ defective.

a$.$ Compute the capability index for the process.

b$.$ Is the process capable?$-21.$ A process that produces computer chips has a mean of $\mathrm{.}04$ defective chip and a standard deviation of $\mathrm{.}003$ chip. The allowable variation is from $\mathrm{.}03$ to $\mathrm{.}05$ defective.

a$.$ Compute the capability index for the process.

b$.$ Is the process capable?