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in australia 77% of adults drink alchol.if we sample 50 adults at random, what is the probabilty that less than 40 of them drink alchol.

in australia 77% of adults drink alchol.if we sample 50 adults at random, what is the probabilty that less than 40 of them drink alchol. assume the number of australians who drink alcholo out of the sample of 50 follows binomal distribution

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