SOLUTION: During a sale, 1/6 of the CD prices are reduced. Find the probability that 2 of 4 randomly-selected CDs have reduced prices?

Question 331636: During a sale, 1/6 of the CD prices are reduced. Find the probability that 2 of 4 randomly-selected CDs have reduced prices?
Answer by jrfrunner(365) (Show Source): You can put this solution on YOUR website!
During a sale, 1/6 of the CD prices are reduced. Find the probability that 2 of 4 randomly-selected CDs have reduced prices?
X=# CD that have reduced prices,
X ~ Hypergeometric distributed, but if N (the population of CDs available) is large compared to the sample size, n then we can use the binomial distribution.
X ~Binomial(n,p) =Binomial(4,1/6)

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