(A) What are the differences and similarities between equipment maintenance and equipment reliance? (5 marks)

(B) The following figures relate to sales for Browns Corporation:

	Reliability
Machine 1	0.99
Machine 2	0.98
Machine 3	0.97
Machine 4	0.96
Total

a) If Brown's uses all of the machines in its operations, what is the reliability of the entire process? (3 marks)

b) If Brown's had a chance to use the machines in pairs, which pairs of machines would give Brown's the best set of reliability? (3 marks)

c) Justify your answer in b above. (3 marks)

d) What is the Probability of Failure for each machine? (3 marks)

e) Brown's Corporation is planning to add two (2) more machines in series to its operations with reliabilities of 0.97 and 0.94. i) What is the new reliability of the system. (3 marks)

(20 marks)