Question: Consider a product that is settled in. Its MTBF distribution has been found to be normal with a mean of 10,000 hours and a standard

Consider a product that is "settled in." Its MTBF distribution has been found to be normal with a mean of 10,000 hours and a standard deviation of 100 hours. Answer the following questions:

(a)Calculate the probability of a breakdown before 8,000 hours?

(b)Calculate the probability of a breakdown before 9,000 hours?

(c)Would you prefer a policy of "preventive maintenance" or a policy of "breakdown maintenance" on this product? Explain your choice.NOTE: A good logical explanation is critical in this discussion.

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