$8,$ Project network diagram

a Duration, ES$/$EF$,$ LS$/$LF$,$ and slack for each project phase

$9,$ Probability of completion within $55$ days

a Crashing plan to ensure completion within $55$ weeks to within $90\%$

could you answer with this data set

Table $5,$ Project Timeline Data

Management would like to see the project completed within $55$ days. What is the probability the project will

finish in that time frame? What phase$($s$)$ must be crashed to ensure a greater$-$than$-90\%$ chance of finishing

within $55$ days?