Please use a scientific calulator if needed

$($

You will also be allowed to use your scientific calulator in the final exam

$)$

$.$

Please round the results to

$0$

$.$

$0$

$1$

$.$

For example,

$1$

$.$

$2$

$3$

$4$

should be rounded to

$1$

$.$

$2$

$3$

;

$2$

$.$

$3$

$4$

$5$

should be rounded to

$2$

$.$

$3$

$5$

$.$

Question

$1$

: Using PERT, please

$($

a

$)$

calculate the expected duration of the following construction project;

$($

b

$)$

determine the critical path;

$($

c

$)$

calculate the probability of completing this project in

$3$

$6$

weeks or less by consulting the following Cumulative Standard