Based on available$$ information, lead time demand for PC thumb drives averages $50$ units$($normally distributed$),$ with a standard deviation of $5$ drives. Management wants a $90\%$ service level. Refer to the standard normal tableLOADING... for$$ z$-$values.

Part $2$

$$a$)$ What value of Z should be$$ applied?

$$

$2\mathrm{.}06$

$1\mathrm{.}04$

$1\mathrm{.}65$

$1\mathrm{.}28$

Part $3$

$$b$)$ How many drives should be carried as safety$$ stock?

$$

enter your response here units $($round your response to the nearest whole$$ number$).$

Part $4$

$$c$)$ What is the appropriate reorder$$ point?

$$

enter your response here units $($round your response to the nearest whole$$ number$).$