Question: 5. In Problem 3, suppose that it was decided to complete the life test at time 4500 hours, so that the seven failures recorded in

5. In Problem 3, suppose that it was decided to complete the life test at time 4500 hours, so that the seven failures recorded in Problem 3 occurred within that time.

(a) Estimate the mean time between failures.

(b) Estimate the reliability at t = 8000 hours.

(c) Estimate the hazard rate.

(d) Find a 95% confidence interval for the mean time between failures.

(e) Find a 95% confidence interval for the hazard rate. (f)

Estimate the mean time to failure with 95% confidence.

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