omfort Living Appliances has just released plans for a new flexible, yet lightweight, vacuum cleaner. The proprietary component of this device is the pivot function of the handle. The plans indicate the possibility of variation within this pivot function. The designers have specified that the height of this section should measure $44\mathrm{.}550$ mm in height but concede that anywhere between $44\mathrm{.}500$ and $44\mathrm{.}645$ mm is acceptable before the function interferes with the hose extender.

Let$$s assume the designers have estimated a standard deviation for the pivot function of $0\mathrm{.}019321$ and assigned this a six$-$sigma process. What is the process capability?