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Normal Distribution

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1) Aamco Heating and Cooling, Inc., advertises that any customer buying an air conditioner during the first 16 days of July will receive a 25% discount if the average temp. for this 16-day period is more than 5 degrees above normal. If daily highs are normally distributed with mean of 84 degrees and standard deviation of 8 degrees, what will the probability that Aamco will have to give customers the 25% discount?

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The expert calculates probability using normal distribution.

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Aamco Heating and Cooling, Inc., advertises that any customer buying an air conditioner during the first 16 days of July will receive a 25% discount if the average temp. for this 16-day period is more than 5 degrees above normal.

If daily highs are normally ...

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