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The estimated times and immediate predecessors for the activities in a project at Howard Umrahs retinal scanning company are given in the following table. Assu that the activity times are independent. Time (weeks) Immediate Time (weeks) Immediate Activity a bPredecessor(s)Activitya bPredecessor(s) 12 10 12 8 17 This exercise contains only parts a, b, c, d, and e a) Based on the activity time estimates, the expected times and variance for each of the activities are (round your response to two decimal places) Expected Time Activity Variancea) Based on the given three time estimates, the expected times and variance for each of the activities are (round your response to two decimal places) Expected Time Activity Variance b) The expected completion time of the critical path- The expected completion time of the path other than the critical path - c) The variance of the critical path - The variance of the path other than the critical path d) If the time to complete the activities on the critical path is normally distributed, then the probability that the critical path will be weeks (round your response to two decimal places) weeks (round your response to two decimal places) weeks (round your response to two decimal places) weeks (round your response to two decimal places) finished in 23 weeks or less - (enter as a probability and round your response to two decimal places) e) If the time to complete the activities on the non critical path is normally distributed, then the probability that the non critical path will be finished in 23 weeks or les (enter as a probability and round your response to two decimal places)please help!!

math   Statistics-And-Probability   
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