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The probability that a randomly selected individual in a certain community has made an online purchase...

The probability that a randomly selected individual in a certain community has made an online purchase is 0.46 . Suppose that a sample of 11 people from the community is selected, what is the probability that at most 3 of them has made an online purchase?

Write only a number as your answer. Round to 2 decimal places (for example 0.24). Do not write as a percentage.
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Answer #1

Let X denote the number of people in the sample that have made an online purchase.

Then

Required probability =

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