(a) What is the difference between quality and reliability? (b) A standby system has a basic unit with four standby components. The time to failure of each component has an exponential distribution with a failure rate of 0.008 /hour. For a 400 hour operation period, find the reliability of the standby system. What is its mean time to failure? Suppose that all five components are operating simultaneously in parallel. What would the system reliability be in that situation? What would the mean time to failure be? 2+4Marks