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