Question $30$

A key joint in a precision machining process has a lower specification limit of a width of $0\mathrm{.}98$ mm and an upper

specification limit of $1\mathrm{.}01$ mm $.$ The standard deviation is $0\mathrm{.}02$ mm and the mean is $1$ mm $.$ What is the process capability

index for the precision machining process? Is the process capable of meeting requirements?

$0\mathrm{.}25$ ; No

$1\mathrm{.}33$; Yes

$1\mathrm{.}33$; No

$0\mathrm{.}25$ ; Yes