Ross Hopkins, president of Hopkins Hospitality, has developed the tasks, durations, and predecessor relationships in the following table for building

new motels.

Time $($weeks$)$

Immediate

Time $($weeks$)$

Immediate

Activity

a

m

b

$$Predecessor$($s$)$

Activity

a

m

b

$$Predecessor$($s$)$

A

$4$

$8$

$12$

$$

G

$3$

$3$

$4$

$$C$,$ E

B

$2$

$8$

$23$

A

H

$2$

$2$

$2$

F

C

$8$

$14$

$16$

A

I

$5$

$5$

$5$

F

D

$5$

$6$

$10$

A

J

$4$

$8$

$14$

$$D$,$ G$,$ H

E

$1$

$3$

$4$

B

K

$3$

$3$

$4$

$$I$,$ J

F

$6$

$8$

$20$

$$C$,$ E

d$)$ The estimated time for the critical path is

weeks. $($Round your response to two decimal places.$)$

e$)$ What is the activity variance along the critical$$ path?