Drive Status Suppose a quality manager for a computer manufacturer has collected

Question

Drive Status Suppose a quality manager for a computer manufacturer has collected the data shown to the right on the quality status of disk drives by supplier. She inspected a total of 600 disk drives. Complete parts a through c below Working 125 180 45 200 Defective 15 20 Supplier Company A Company B Company C Company D a. Based on these inspection data, what is the probability of randomly selecting a disk drive from Company C? (Round to four decimal places as needed.) b. What is the probability of a defective disk drive being received by the computer company? (Round to four decimal places as needed.) c. What is the probability of a defect given that Company C supplied the disk drive?

Explanation / Answer

a) P(C)=(45+10)/600=0.0917

b) P(defective)=(5+15+10+20)/600=0.0833

c) P(defective |C)=P(defective and from C)/P(C)=10/(45+10)=0.1818

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