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A company knows that 15% of it customers are retirees. Find the probability that if 7 of this company's customers are randomly selected, at least

A company knows that 15% of it customers are retirees. Find the probability that if 7 of this company's customers are randomly selected, at least one of them is a retiree.

0.32057708828125
0.85
5.95
0.99999829140625
0.67942291171875
1.70859375E-6

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