Determine whether the following individual events are overlapping or non-overlapping. Then find the probability of the combined event.

Drawing either a 6 or an ace from a regular deck of cards

The probability of drawing either a 6 or an ace from a regular deck of cards is
(Type an integer or a simplified fraction.)

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?