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Part $1$

An office manager is deciding on a paper shredder to be purchased for her legal firm. Three suppliers have provided information about their$$ shredders, including MTBF and MTTR for the models under evaluation. Use the information shown in the table to calculate the system availability for each$$ supplier's shredder.

Supplier A

Supplier B

Supplier C

MTBF$($hours$)$

$65$

$60$

$70$

MTTR$($hours$)$

$6$

$10$

$9$

Which supplier should the office manager select if she chooses the supplier with the best system$$ availability?

Part $2$

The system availability of supplier A is

$$

enter your response here. $($Enter your response rounded to four decimal$$ places.$)$

Part $3$

The system availability of supplier B is

$$

enter your response here. $($Enter your response rounded to four decimal$$ places.$)$

Part $4$

The system availability of supplier C is

$$

enter your response here. $($Enter your response rounded to four decimal$$ places.$)$

Part $5$

On the basis of system$$ availability, supplier

$$

C

B

A

should be selected.