Inspection of a random sample of 35 aircraft showed that 26 needed repairs to fix a wiring problem that might compromise safety. (a) how large a sample would be needed to estimate the true proportion of jets with the wiring problem, with 95 percent confidence and an error of ± 4 percent? (enter your answer as a whole number (no decimals). use a z-value taken to 3 decimal places in your calculations.) (b) would the airline actually conduct further sampling, or just inspect all the planes? conduct further sampling inspect all the planes

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?