Introduction to Management Science 12th Edition by Bernard Taylor

Exercise 3

A retail outlet receives radios from three electrical appliance companies. The outlet receives 20% of its radios from A, 40% from B, and 40% from C. The probability of receiving a defective radio from A is.01; from B,.02; and from C,.08.
a. Develop a probability tree showing all marginal, conditional, and joint probabilities.
b. Develop a joint probability table.
c. What is the probability that a defective radio returned to the retail store came from company B