Sixty-four percent of parents would give up cable television to have their child

Question

Sixty-four percent of parents would give up cable television to have their child's education paid for. You randomly select five parents. find the probability that the number of parents who would give up cable television to have their child's education paid for is (a) exactly two, (b) less than four, (c) at least three.
Sixty-four percent of parents would give up cable television to have their child's education paid for. You randomly select five parents. find the probability that the number of parents who would give up cable television to have their child's education paid for is (a) exactly two, (b) less than four, (c) at least three.

Explanation / Answer

We use the binomial off to solve the problem -

A. P(x=2) = 5c2 *. 64^2. 36^3 =. 1911

B. P(X<4) =P(X=0,1,2,3) = 5c0*.64^0*.36^5...+5c3*.64^3*.36^2 =. 3397

C. P(x>=3) = 1-p(x<3) = 1-. 25089=.7491

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