Over a period of 4 hours, the outside temperature changed by an average of –1.5 per hour. Highlight the statement that correctly describes the change in the temperature from the beginning to the end of the 4-hour period? A:The temperature decreased by 7 degrees. B: The temperature increased by 6 degrees. C: The temperature decreased by 6 degrees. D: The temperature increased by 7 degrees.

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?