In a certain city, the daily consumption of electric power, in millions of kilowatt-hours, is a random variable X having a gamma distribution with mean u= 12 and variance o? = 48. (a) Find the values of a and ß. (b) Find the probability that on any given day the daily power consumption will exceed 15 million kilowatt-hours. .... (a) a = 3 (b) The probability is (Round to four decimal places as needed.)

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