1.a) A local project being analyzed by PERT has 13 activities, 9 of which are on the critical path. If the estimated time along the critical path is 105 days with a project variance of 25, what is the probability that the project will be completed in 100 days or less? (please answer to four decimal places) b) A local project being analyzed by PERT has 15 activities, 8 of which are on the critical path. If the estimated time along the critical path is 105 days with a project variance of 25, what is the probability that the project will be completed in 110 days or less? (please answer to four decimal digits)

c) A project whose critical path has an estimated of 145 days with a variance of 100 has a 25% chance that the project will be completed before day (please round off to two decimal digits)