Group of university of massachusetts sociologists

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Reference no: EM131128910

According to a study published by a group of University of Massachusetts sociologists, approximately 60% of the Valium users in the state of Massachusetts first took Valium for psychological problems. Find the probability that among the next 8 users from this state who are interviewed,

(a) exactly 3 began taking Valium for psychological problems;
(b) at least 5 began taking Valium for problems that were not psychological.

Reference no: EM131128910

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