The manufacturing of compact disks requires four steps. The reliabilities of the steps are 0.80, 0.85, 0.95, and 0.90 respectively. What is the reliability of the process to produce a good compact disk?
A) less than or equal to 0.45
B) greater than 0.45 but less than or equal to 0.50
C) greater than 0.50 but less than or equal to 0.55
D) greater than 0.55

Question

Quizplus · Accepted Answer

The reliability of the entire process is the product of the reliabilities of each step: 0.80 * 0.85 * 0.95 * 0.90 = 0.5805, which is greater than 0.55.

The Manufacturing of Compact Disks Requires Four Steps