Recall the conditions for a binomial probability. There are n independent trials, each with only one of two outcomes, a success or a failure. The probability of a success, p, is the same for each trial. The expected value, also referred to as µ, is calculated as µ = np, where n is the sample size. For this scenario, there are two options - either someone smokes, or they do not. Let a success be that someone in this group is a smoker. It was given that 20% of adults smoke. Convert this percentage to a probability. percentage probability of a success = 100% % p = 100% Use the found probability of a success, p, to find the expected number of adults in the sample of 350 who smoke. H = np 350(|

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