Compute expected time for each activity, also variance.

Activity

o $($optimistic$)$

p $($pessimistic$)$

m $($most likely$)$

Immediate Predecessor

te $($estimated time$)$

Variance

A

$4$

$6$

$5$

$5\mathrm{.}0$

$0\mathrm{.}1$

B

$2$

$8$

$5$

$5\mathrm{.}0$

$1\mathrm{.}0$

C

$5$

$9$

$7$

A

$7\mathrm{.}0$

$0\mathrm{.}4$

D

$4$

$6$

$5$

A

$5\mathrm{.}0$

$0\mathrm{.}1$

E

$2$

$6$

$4$

B

$4\mathrm{.}0$

$0\mathrm{.}4$

F

$3$

$9$

$6$

B

$6\mathrm{.}0$

$1\mathrm{.}0$

G

$10$

$12$

$11$

C$,$ E

$11\mathrm{.}0$

$0\mathrm{.}1$

H

$7$

$9$

$8$

D$,$F

$8\mathrm{.}0$

$0\mathrm{.}1$ Determine the probability the project will NOT be finished in $26$ days or less?