how do I find it? give me steps

This exercise contans only parts a,b,c,d, and a) Based on the activity time estimates, the expected times and vaniance for each of the activities are (round your response fo two decimal places). b) The expected completion time of the critical path =207 weeks (round your rosponse to two decimal places). The expected completion time of the path other than the critical path = weeks (round your response fo two decimal places). c) The variance of the critical path =5.38 weeks (round your response to hwo decimal places). The vaniance of the path other than the critical path = weeks (round your response fo fwo docimal places). This exercise contans only parts a,b,c,d, and a) Based on the activity time estimates, the expected times and vaniance for each of the activities are (round your response fo two decimal places). b) The expected completion time of the critical path =207 weeks (round your rosponse to two decimal places). The expected completion time of the path other than the critical path = weeks (round your response fo two decimal places). c) The variance of the critical path =5.38 weeks (round your response to hwo decimal places). The vaniance of the path other than the critical path = weeks (round your response fo fwo docimal places)