answer with full steps please

(Keep 4 decimal places if necessary) The probability of a telesales representative making a sale on a customer call is 0. 1. a) Find the probability that no sales are made in 25 calls b ) Find the probability that at least 2 sales are made in 25 calls. c) Find the probability that between 2 and 6 (inclusive for both) sales are made in 25 calls. d) Representatives are required to achieve a mean of at least 5 sales every day. Find the least number of calls each day a representative should make to achieve this requirement. e) Calculate the least number of calls that need to be made by a representative for the probability of at least 1 sale to exceed 0.95