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Sales A manufacturer makes two models of an item: model I,
Chapter 4, Problem 18E(choose chapter or problem)
Problem 18E
Sales A manufacturer makes two models of an item: model I, which accounts for 80% of unit sales, and model II, which accounts for 20% of unit sales. Because of defects, the manufacturer has to replace (or exchange) 10% of its model I and 18% of its model II. If a model is selected at random, find the probability that it will be defective.
Questions & Answers
QUESTION:
Problem 18E
Sales A manufacturer makes two models of an item: model I, which accounts for 80% of unit sales, and model II, which accounts for 20% of unit sales. Because of defects, the manufacturer has to replace (or exchange) 10% of its model I and 18% of its model II. If a model is selected at random, find the probability that it will be defective.
ANSWER:
Solution:
Step 1 of 2:
It is given that a manufacturer makes two models, model I and Model II.
80% of unit sales is from model I and 20% unit sales is from model II.
Also, it is given that the manufacturer replaces 10% of model I and 18% of model II because of defects.
Using this we need to find the probability that a randomly chosen model is defective.