A sample of failure times shows that an electronic component has a constant haza

Question

A sample of failure times shows that an electronic component has a constant hazard rate, which is estimated to be 1 over 200 hours.
a) What is the Mean time to failure?

b) If such an electronic component has been operating for 100 hours, what is the probability that it will fail within the next 50 hours?

c) Suppose there are 50 observations in the sample, 10 of which are right censored. Compute the 90% confidence intervals for the hazard rate and the MTTF, respectively. Interpret these two confidence intervals properly.

Explanation / Answer

(a) (200*201)/(2*200) = 100.5 hrs

(b) (50/200) /(100/200) =0.5

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