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Data collected by the Substance Abuse and Mental Health Services Administration suggests that 70 of 18-20...

Data collected by the Substance Abuse and Mental Health Services Administration suggests that 70 of 18-20 year olds consumed alcoholic beverages in a recent year. Suppose a random sample of 18 18-20 year olds is taken. Calculate the probability that at most 9 students consumed alcoholic beverages?

Math   Statistics-And-Probability   
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Answer #1

=BINOM.DIST(9,18,0.7,TRUE)=0.059586

which means that the probability we are looking for is Pr(X≤9)=0.0596.

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