The distribution of typographical errors in book of 600 pages is: Number of errors: 0 1 2 3 4 Number of pages: 250 200 100 40 10 The mode and median number of errors in the book respectively are a. 0, 1 b. 1, 2 c. 0, 2 d. 2, 1

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?