One day, a pet supply store selected every 20th person on a customer list and asked each how many dogs he or she had at home. ten persons were asked in all.

number of dogs at home: 2, 1, 3, 2, 2, 1, 4, 0, 1, 4

what is an estimate of the mean number of dogs in a customer’s home?

enter your answer in the box.

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?