Among 22?- to 27?-year-olds, 32?% say they have called a talk show while under the influence of alcohol. Suppose seven 22 to 27?-year-olds are selected at random.
?(a) What is the probability that at least one has not called a talk show while under the influence of alcohol??
?(b) What is the probability that at least one has called a talk show while under the influence of alcohol?