Question content area

Part $1$

$0\mathrm{.}98$

$0\mathrm{.}97$

$0\mathrm{.}85$

$0\mathrm{.}98$

$0\mathrm{.}97$

$0\mathrm{.}85$

Part $2$

$$a$)$ The reliability of the system shown above$=$

$$

enter your response here$\%($enter your response as a percentage rounded to two decimal$$ places$).$

Part $3$

$$b$)$ As compared to a system without backup$($shown below$),$

$0\mathrm{.}98$

$0\mathrm{.}97$

$0\mathrm{.}85$

the reliability of the system with backup is higher by

$$

enter your response here$\%($enter your response as a percentage rounded to two decimal$$ places$).$