Suppose that a three stage process had reliability ratings of .7, .8, and .9 at each station and that a failure at any station represented a failure for the entire process. If each station is given a redundant check with .9 reliability, what is the increase in system reliability?

System Reliability

The probability that a system will perform its intended function without failure under specified conditions for a designated period of time.

Redundant Check

A method of error detection which involves adding additional data or using duplication to ensure information accuracy and reliability.

Reliability Ratings

Measurements or estimates that indicate the dependability or consistency of a product, service, or system's performance.