int: p

$($

$0$

$<$

$$z

$<$

$1$

$.$

$6$

$4$

$5$

$)$

$=$

$0$

$.$

$4$

$5$

$$

Activity

Immediate

Predecessors

Completion Time

$($

Weeks

$)$

Optimistic

Most Likely

Pessimistic

A

N

$/$

A

$1$

$2$

$3$

B

A

$2$

$4$

$6$

C

A

$2$

$5$

$8$

D

A

$1$

$1$

$1$

E

B

$,$

$$C

$2$

$3$

$4$

F

D

$1$

$2$

$3$

What is the

$9$

$0$

$\%$

$$confidence interval of the total project completion time?

Group of answer choices

$6$

~

$1$

$3$

$8$

~

$1$

$2$

$7$

~

$1$

$0$

$5$

~

$8$

Give a time within which you can be $95\%$ sure of completing the project.

Group of answer choices

$10\mathrm{.}25$

$11\mathrm{.}82$

$8\mathrm{.}17$

$14\mathrm{.}15$