$=60$ hours, $MTTR=2\mathrm{.}5$ hours, $=0\mathrm{.}01667$ failure$\frac{s}{h}$our, Availability $=0\mathrm{.}96,$

Reliability Function for $10$ hours ~~$0\mathrm{.}92$

$BMTBF=80$ hours, $MTTR=3\mathrm{.}5$ hours, $=0\mathrm{.}01$ failure$\frac{s}{h}$our, Availability $=0\mathrm{.}95,$ Reliability

Function for $10$ hours ~~$0\mathrm{.}85$

$C=100$ hours, $MTTR=1\mathrm{.}5$ hours, $=0\mathrm{.}007$ failures $\frac{?}{?}$ hour, Availability $=0\mathrm{.}98,$

Reliability Function for $10$ hours ~~$0\mathrm{.}90$

$DMTBF=50$ hours, $MTTR=3$ hours, $=0\mathrm{.}009$ failure$\frac{s}{h}$our, Availability $=0\mathrm{.}90,$ Reliability

Function for $10$ hours ~~$0\mathrm{.}93$