6. A project has the activities and activity times (days) listed below. Determine the probability th

6. A project has the activities and activity times (days) listed below. Determine the probability that the project will require less than 15 days from start to finish. ctivity 1-2 2-4 1-3 3-4 ime 1.31 2.70 1.00 0.00 6 Formulas: Path mean ? (expected times of activities on the path) Path standard deviation = the path. z-(specified time-Path mean)/ Path standard deviation. ?(?)2 , where is the standard deviation for activity i on ?