Astrid is painting the outside of her cabin. She knows that working alone, it will take her 23 hours to complete the job. A reasonable estimate for how long the job will take if she has her two sons help if they each work at approximately the same rate as Astrid is
hours.

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?