a. Calculate the earliest expected completion time
Activity Time (weeks) Immediate Predecessors 1- collect requirements 2 - 2- analyze processes 3 1 3- analyze data 3 2 4- design processes 7 2 5- design data 6 2 6- design screens 1 3, 4 7- design reports 5 4, 5 8- program 4 6, 7 9- test and document 8 7 10- install 2 8,9
b. Draw the GANNT and PERT charts for the activities
c. Show the critical path in the PERT chart.
d. Will the critical path change if Activity 6 was revised to take six weeks instead of one week?