A test is needed to verify a 300,000-hour MTBF product criterion. The product is typically used 24 hours per day by customers. (a) If five failures are allowed and a 90% confidence interval statement...

A test is needed to verify a 300,000-hour MTBF product criterion. The product is typically used 24 hours per day by customers.

(a) If five failures are allowed and a 90% confidence interval statement is desired, deter mine the total number of test hours.

(b) Create a test performance ratio chart that lists various test alternatives.

(c) Consider test alternatives (e.g., a DOE strategy).