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Furnace repair bills are normally distributed with a mean of u = 273 dollars and a standard deviation of o = 25 dollars. If n

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Furnace repair bills are normally distributed with a mean of u = 273 dollars and a standard deviation of o = 25 dollars. If n = 100 of these repair bills are randomly selected, find the probability that they have a mean cost, , between 270 dollars and 276 dollars. i.e. find P(270

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