Solve the problem. 15) A machine is set to pump cleanser into a process at the rate of 6 gallons per minute. Upon inspection, it is learned that the machine actually pumps cleanser at a rate described by the uniform distribution over the interval 5.5 to 8.5 gallons per minute. What is the probability that at the time the machine is checked it is pumping more than 7.0 gallons per minute?

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