In studies for a? medication, 9 percent of patients gainedweight as a side effect. Suppose 542 patients are randomlyselected. Use the normal approximation to the binomial toapproximate the probability that ?(a) exactly 42 patients will gainweight as a side effect. ?(b) 42 or fewer patients will gain weightas a side effect. ?(c) 56 or more patients will gain weight as aside effect. ?(d) between 42 and 65?, ?inclusive, will gain weightas a side effect. ?(a) ?P(Xequals42?)equals nothing ?(Round to fourdecimal places as? needed)
