The lewer and upper specification limits for the amount active ingredient in a drug tablet are $20\mathrm{.}0$ and $22\mathrm{.}4$ milligrams, respectively. The amounts of active ingredient in tablets are normally distributed What is the value of the process variance if the tablet production process has a process. capability index of $1\mathrm{.}3?$ What percentage of the tablets will be nonconferming when the process mean is at the target lexel of $21\mathrm{.}2$ milligrams and the process capability index is $1\mathrm{.}3?$