company's Web page, including optimistic, most likely, and pessimistic.

Activity

A

B

C

Optimistic $($days$)$

$4$

Most likely $($days$)$

$8$

$14$

$5$

$8$

$3$

Pessimistic $($days$)$

$20$

$13$

$1$

$3$

$2$

$17$

$15$

D

E

$20$

$6$

a$.$ Calculate the expected time, t$,$ for each activity. $($Enter your responses rounded to two decimal places.$)$

Activity

A