If the mean time to failure of a hydraulic seal is 482 hours, calculate the probability that it will not fail in the first 360 hours.  Four components connected in series in a production system have...

If the mean time to failure of a hydraulic seal is 482 hours, calculate the probability

that it will not fail in the first 360 hours.

 Four components connected in series in a production system have the following reliabilities: 0.98 0.94 0.96 0.97.

(a) Calculate the reliability of the whole production system.

(b) If a better-quality component could be purchased to replace Component 2 in

the system (the one with a reliability of 94%), what would its reliability have

to be to increase the overall system reliability to 90%?