Consider a product that is "settled in." Its MTBF distribution has been found to be normal with a mean of 1,000 hours and a standard deviation of 250 hours. What is the probability of a breakdown before 750 hours?
Before 500 hours?
Would you prefer a policy of preventive maintenance, or a policy of breakdown maintenance, on this product?
Explain your choice.

Question

Consider a product that is "settled in." Its MTBF distribution has been found to be normal with a mean of 1,000 hours and a standard deviation of 250 hours. What is the probability of a breakdown before 750 hours?
 Before 500 hours?
 Would you prefer a policy of preventive maintenance, or a policy of breakdown maintenance, on this product?
 Explain your choice.

Quizplus · Accepted Answer

The Answer of Consider a product that is "settled in." Its MTBF distribution has been found to be normal with a mean of 1,000 hours and a standard deviation of 250 hours. What is the probability of a breakdown before 750 hours?
 Before 500 hours?
 Would you prefer a policy of preventive maintenance, or a policy of breakdown maintenance, on this product?
 Explain your choice.

Consider a Product That Is "Settled In