A retail outlet gets radios from 3 electrical appliance companies. The outlet gets 20% of its radios from A, 40% from B, and 40% from C. The probability of receiving the defective radio from A is .01; from B, .02; and from C, .08.
a. Make a probability tree showing all marginal, conditional, and joint probabilities.
b. Make a joint probability table.
c. Find out the probability which a defective radio returned to retail store came from company B?