Time $($days$)$

Immediate

Activity

a

m

b

$$Predecessor$($s$)$

A

$4$

$7$

$8$

long dash

B

$10$

$11$

$12$

long dash

C

$2$

$3$

$4$

long dash

D

$6$

$7$

$8$

C

E

$1$

$3$

$5$

$$B$,$ D

F

$6$

$11$

$14$

$$A$,$ E

G

$1$

$2$

$3$

$$A$,$ E

H

$3$

$5$

$7$

F

I

$10$

$11$

$12$

G

J

$13$

$15$

$17$

C

K

$4$

$8$

$12$

$$H$,$ I

This exercise contains only part a$.$

Part $2$

$$a$)$ Based on the activity time$$ estimates, the expected times and variance for each of the activities$$ are:

$($Round your responses to two decimal$$ places.$)$