The really concerned about meeting the client deadline so he can make a good impression on his first, big client project. He decides to use the PERT approach and ask his team about worst case and best case scenarios for each activity. He does the math and determines that the project variance is 5 days.

 

The expected time to complete the project is now 36 days and the client will be back on sitein 40 days for the presentation of his findings. He really needs to get this thing completed in 40 days. What's the probability that he'll be able to finish on time? (show answer as a percentage with one decimal place)