QUESTION 12 Use the Empirical Rule (68-95-99.7) to answer the following: The playing life of a sunshine radio is normally distributed with a mean of 600 hours and a standard deviation of 100 hours. a. Find the range of hours that correspond to the middle 68%. b. Find the range of hours that correspond to the middle 95%. c. Find the range of hours that correspond to the middle 99.7%.

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