Thirty percent of all customers who enter a store will make a purchase. suppose that six customers enter the store and that these customers make independent purchase decisions. (1) use the binomial formula to calculate the probability that exactly five customers make a purchase. (round your answer to 4 decimal places.) probability (2) use the binomial formula to calculate the probability that at least three customers make a purchase. (round your answer to 4 decimal places.) probability (3) use the binomial formula to calculate the probability that two or fewer customers make a purchase. (round your answer to 4 decimal places.) probability (4) use the binomial formula to calculate the probability that at least one customer makes a purchase. (round your answer to 4 decimal places.) probability