a$)$ Based on the activity time$$ estimates, the expected times and variance for each of the activities are $($round your response to two decimal$$ places$)$:

Part $3$Part $4$Part $5$

Activity

Expected Time

Variance

A

$$

$10\mathrm{.}33$

$$

$.44$

B

$$

$11\mathrm{.}50$

$$

$3\mathrm{.}36$

C

$$

$9\mathrm{.}83$

$$

$.69$

D

$$

$8\mathrm{.}00$

$$

$1\mathrm{.}78$

Part $6$

$$b$)$ The expected completion time of the critical path$=$

$$

enter your response here weeks $($round your response to two decimal$$ places$)$