asting Overview of Qu Approa tion to Business Analytics laive approach loving avera perd Three critical path activities are candidates for crashing on a CPM network. Activity 12 details are in the table below Activit Normal Time Normal Cost Duration Crash Cost Crash 3 day 12 days $1,800 $5,000 days $8,000 $2,400 9 days $7,700 a. What is the crash cost per unit time for each of the three activities? b. Which activity should be crashed first to cut one day from the project's duration; how much is added to project cost? c. Assuming the critical path has not change as a result of the first activity crashed, which activity should be the next crashed to cut a second day from the project's duration, how much is added to project cost? If the Mean Expected Completion Time for a project is 90 days with a project variance of il 2.2, what is the probability that the project will be completed in 100 days or less