Production levels, and therefore revenue and production costs, vary for all three machines. Only the variations in revenue among maintenance policies is statistically tested for significance. Machine 3 is the only machine that exhibits any significant differences between revenue. Although Machines 1 and 2 produce production levels that are not statistically different, the variations among revenue and the results for Machine 3 implythatthepotentialexiststoincreaseproductionwhentheappropriate maintenance policy is in effect. The results for the availability measure substantiate this premise.