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QUESTION

If the average price of a new one family home is $267,300 with a standard deviation of$17,560, find the minimum and maximum prices of the houses

If the average price of a new one family home is $267,300 with a standard deviation of$17,560, find the minimum and maximum prices of the houses that a contractor will build to satisfy the middle 80% of the market. Assume that the variable is approximately normally distributed.