A study by the Parents’Television Council showed that 80 percent of movie commercials aired on network television between 8 and 9 P.M. (the prime family viewing hour) were for R-rated films. (a) Find...

A study by the Parents’Television Council showed that 80 percent of movie commercials aired on network television between 8 and 9 P.M. (the prime family viewing hour) were for R-rated films. (a) Find the probability that in 16 commercials during this time slot at least 10 will be for R-rated films. (b) Find the probability of fewer than 8 R-rated films.