The intensive care unit lab process has an average turnaround time of $26\mathrm{.}2$ minutes and a standard deviation of $1\mathrm{.}5$ minutes. Further, the nominal value from design specification for this service is $25$ minutes $+/-5$ minutes.

What is the capability nidex of this production process?

$0\mathrm{.}84$

$0\mathrm{.}94$

$1\mathrm{.}38$

$1\mathrm{.}48$