Please show work. Thank you! 06.DiscreteRandomVariables 1: Problem 2 Prev Up Nex

Question

Please show work. Thank you!

06.DiscreteRandomVariables 1: Problem 2 Prev Up Next 1 pt) A survey of Amazon.com shoppers reveals the following probability distribution of the number of books per hit: X 01 2 3 45 6 7 P) 0.3290.2040.0760.108 0.0290.025 0.009 0.22 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

Ans:

a)P(x=4)=0.029

b)P(x=8)=0

c)P(x=0)=0.329

d)P(x>=1)=P(x=1)+P(x=2)+........P(x=7)=0.204+0.076+0.108+0.029+0.025+0.009+0.22=0.671

or

P(x>=1)=1-P(x=0)=1-0.329=0.671

x P(x) 0 0.329 1 0.204 2 0.076 3 0.108 4 0.029 5 0.025 6 0.009 7 0.22 Total 1

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