There are 45 new houses being built in a neighborhood last month, 1/3 of them were sold. this month, 1/5 of the remaining houses were sold. how many houses are left be sold?

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)