Develop a sequential test for the CFR model to test the hypothesis that the MTTF = 100 hr…

Develop a sequential test for the CFR model to test the
hypothesis that the MTTF = 100 hr versus the alternate hypothesis that the MTTF
= 50 hr. Set a = 0.1 and f3 = 0.15. What is the minimum number of failures
necessary to reject the hypothesis, and what is the minimum time on test
before the hypothesis may be accepted?