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A brand of refrigerator has a lifetime expectancy that is normally distributed with a mean of 15 years and a standard deviation of 2.5 years. (a)The company has a warranty stating that any refrigerator that has problems within the first 10 years will be fixed free of charge. If the contracted cost to the company to repair a refrigerator is $150, what is the expected value of the cost to the compnay per refrigerator?

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