Gretel runs away from home at 2 pm, traveling west on her bicycle. At 4:30pm the wicked witch realizes she is gone, and takes off after her on her enchanted elephant. If the elephant travels at 36 mph, and the witch catches Gretel just in time for a late dinner at 7:30pm. What was Gretel's average speed to the nearest tenth? Must show work

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?