The price of a sweater was slashed from $ 960 to $ 816 , which means the sweater was marked down $144, by a shopkeeper in the winter season. find the percent of off of the sweater

Given a binomial distribution variable with n=20 and p=0.60 find the following possibilities using the binomial table a) p(x < 13) b) p x > 15) c) p(x = 17) d) p(11 < x < 14) e) p(11 < x < 14)