Question: A company has 3 machines in a process. The reliability of the machines are as follows: Machine A -0.70 Machine B -0.95 Machine C -0.95

A company has 3 machines in a process. The reliability of the machines are as follows: Machine A -0.70 Machine B -0.95 Machine C -0.95 There is one back-up machine for Machine A. What is the reliability of the system without the back-up and what is the reliability of the system including the back-up? (Choose closest answer) Without back up: 0.821. With the back-up: 0.886 Without back-up: 0.684. With the back up: 0.821 Without back-up:0.900. With the back-up: 0.953 Without back-up: 0.632. With the back-up: 0.821 Without back-up:0.766, With the back-up: 0887 Without back-up: 0.833. With the back-up: 0.920

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