SOLUTION: study find that 80% of student text while doing home work. ten students selected. find the probability that at most 7 student of 10 text while doing homework .

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Question 755627: study find that 80% of student text while doing home work. ten students selected. find the probability that at most 7 student of 10 text while doing homework .
Answer by reviewermath(1029) About Me  (Show Source):
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Q:
study find that 80% of student text while doing home work. ten students selected. find the probability that at most 7 student of 10 text while doing homework .
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A:
X~Binomial(10, 0.8)
P(X ≤ 7) = sum%28%28matrix%282%2C1%2C10%2Cx%29%29%280.8%5Ex%29%280.2%5E%2810+-+x%29%29%2C+x+=+0%2C+7%29 = highlight%280.3222%29