Consider the type of clothes dryer (gas or electric) purchased by each of five customers at a certain store. A. If the probability that at most one of these purchases an electric dryer is 0.428 what is the probability that at least two purchase an electric dryer?
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I am not certain how to answer either question. For (a), we know that P(1 purchases electric)=.428, but does this allow us to infer anything about P(4 purchasing gas)=? Also, would knowing the complement of "1 purchases electric" help at all? What would the complement be? Would it be that no one purchases an electric dryer?
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