A survey of Amazon.com shoppers reveals the following probabity distribution of

Question

A survey of Amazon.com shoppers reveals the following probabity distribution of the number of books per hit P0.320 204 0.0780 2590 029 0.0240.010 076 Find the following probabilities: A. What is the probability that an Amazon.com visitor will buy four books? Probability = B. What is the probability that an Amazon.com visitor will buy eight books? Probability = C. What is the probability that an Amazon.com visitor will not buy any books? Probability = D. What is the probability that an Amazon.com visitor will buy at least one book? Probability =

Explanation / Answer

Answer w.r.t to data given :

A. P(X=4) = .029

B. P(X=8) = 0 ( since X=0 to 7 sums upto 1)

C. P(X=not buy any books) = P(X=0) = .32

D. P(X>=1) = 1-P(X<1) = 1-P(X=0) = 1-.32 = .68

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