M7.4 The expected project completion time for the construction of a pleasure yacht is 21 months and the project variance is 6. questions (Note: when using the Z tables - round your Z values to two decimal places before getting the probabilities from the tables. DO NOT round standard deviations prior to calculating Z values) NOTE: Enter probabilities as decimals (i.e 92.31% should be entered as 0.9231) a) What is the probability that the project will require at least 17 months? (Enter 4 decimal places) b) What is the probability that the project will be completed within 20 months? (Enter 4 decimal places) c) What is the probability that the project will require at least 23 months? (Enter 4 decimal places) d) What is the probability that the project will be completed within 25 months? (Enter 4 decimal places) e) What is the probability that the project will take between 17 and 23 months to complete? (Enter 4 decimal places)