Question: please solve both 4 and 34 DO NOT use EXCEL Q4-An activity on a PERT network has these time estimates: optimistic =2, most likely =3,

please solve both 4 and 34 DO NOT use EXCEL

Q4-An activity on a PERT network has these time estimates: optimistic =2, most likely =3, and pessimistic =8. What is its expected activity time and variance? Please show all details and use two decimals in your answer 34-Two critical path activities are candidates for crashing on a CPM network. Activity details are in the table below. To cut two days from the project's duration, activity should be crashed first, adding to project cost and activity should be crashed second, adding to project cost

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