Based on a Comcast survey, there is a 0.8 probability that a randomly selected adult will watch prime-time TV live, instead of online, on DVR, etc. Assume that seven adults are randomly selected, and find the indicated probability.
a. Find the probability that exactly two of the selected adults watch prime-time TV live.
b. Find the probability that exactly one of the selected adults watches prime-time TV live.
c. Find the probability that fewer than three of the selected adults watch prime-time TV live.
d. If we randomly select seven adults, is two an unusually low number for those who watch prime-time TV live?