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The probability distribution of the life of a machine is as shown in Table below Machine life ( hours) probability 1000 0.2 1300 0.35 1600 0.45 When the machine stops, a repairperson is called. The delay time of the repairperson's arriving at the machine is also a random variable, with the distribution given in below: Delay Time probability (Minutes) 5 0.6 10 0.3 15 0.1 Downtime for the machine is estimated at $5 per minute. The direct on-site cost of the repairperson