Posted by **carol** on Wednesday, June 18, 2014 at 4:57pm.

Among 38-43 year old, 25% say they have written an editorial letter while under the influence of peer pressure. Suppose two 38-43 year old are selected at random. (a )what is the probability that at least one has not written under the influence of peer pressure. (b) what is the probability of that at least one has written an editorial letter while under the influence of peer pressure

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