Question: A system is designed to operate for 160 days. The system consists of three components in series. Their failure distributions are (1) Weibull with shape

A system is designed to operate for 160 days. The system consists of three components in series. Their failure distributions are (1) Weibull with shape parameter 1.25 and scale parameter 850 days; (2) lognormal with shape parameter (s) 0.75 and median 440 days; (3) constant failure rate of 0.0002. (a) Compute the system reliability. (b) If two units of components 1 and 2 are available, determine the high-level redundancy reliability. Assume that components 1 and 2 can be configured as a sub-assembly. (c) If two units of components 1 and 2 are available, determine the low-level redundancy reliability.

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