Question $3$

Using the data provided in the RBA diagram, what is the overall reliability of the system?

Less than $50\%$

Between $50\%$ and $70\%$

Between $70\%$ and $90\%$

Over $90\%$

Question $4$

$0\mathrm{.}5pts$

After completing the "series analysis" of the system, you have been asked which component is a candidate for an improvement initiative?

R$1$

R$2\mathrm{.}1,$ R$2\mathrm{.}2,$ R$2\mathrm{.}3$

R$3,$ R$4$

$R5\mathrm{.}1,R5\mathrm{.}2,R5\mathrm{.}3$&$R5\mathrm{.}4$

R$6$

No action is needed since all components exceed $90\%$ reliability.