Suppose 38% of customers at a retail store make a purchase d…

Suppоse 38% оf custоmers аt а retаil store make a purchase during a visit. A random sample of 45 customers entering the store is selected. (Round to 3 decimal places as needed.)   a. Find the probability that exactly 12 of the sampled customers make a purchase. [a][a] b. Find the probability that between 10 and 20, inclusive, of the sampled customers make a purchase. [b] c. Find the probability that at least 15 of the sampled customers make a purchase. [c][b][c] d. Find the expected number of customers who make a purchase in the sample. [d][d]