QUANTATIVE METHOD: Probability tree & joint probability table for electric appliances

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.