8. Five customers enter a wireless corporate store to purchase smartphones. If the probability that at least

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8. Five customers enter a wireless corporate store to purchase smartphones. If the probability that at least three of them purchase an Android smartphone is 0.54, what is the probability that at most two of them buy such a phone?

Hint: For 0 ≤ i ≤ 5, let Ai be the event that exactly i of these customers buy an Android smartphone. Note that P5 i=0 P(Ai) = 1.

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