help q4.5.6

4.) Sixty-three percent of US teenagers say that they use Instagram daily. You randomly select seven teenagers. Find the probability that the number of US teenagers who say they use Instagram daily is: a.) exactly two. b.) more than three. c.) between one and for inclusive. 5.) The mean number of oil tankers at a port city is eight per day. Find the probability that the number of oil tankers on any given day is: a.) exactly eight. b.) at most three c.) more than eight. 6.) An auto parts seller finds that 1 in every 100 parts sold is defective. Find the probability that: a.) the first defective part is the tenth sold. b.) the first defective part is the first, second, or third sold. c.) none of the first 5 parts sold are defective