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6. Consider a situation in which a used-car lot contains five Fords, four General Motors (GM) cars, and five Toyotas. If five cars are selected at random to be placed on a special sale, what is the probability that two are Fords, two are GMs and 1 Toyota? a) 2.50% b) 14.99% C) 75% d) 86.25% 7. The useful life of an electrical component is exponentially distributed with a mean of 2,500 hours. What is the probability the circuit will last more than 3,000 hours? a) 30.12% b) 44.93% c) 55.07% d) 69.88% 8. Refer to problem 7, what is the probability the circuit will fail within the first 2,000 hours? a) 30.12% b) 44.93% c) 55.07% d) 69.88% 9. A continuous random variable is uniformly distributed between 100 and 150. What is the probability a random selected value will be greater than 135? a) 20% b) 30% C) 40% d) 50% 10. Refer to problem 9, What is the probability a random selected value will be between 115 and 135? a) 20% b) 30% C) 40% d) 50%