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Boston's mean minimum daily temperature in February is 23 degrees * F (http://www.city-data.com). Suppose the standard deviation of the minimum temperature is 8 degrees *

Boston's mean minimum daily temperature in February is 23 degrees * F (http://www.city-data.com). Suppose the standard deviation of the minimum temperature is 8 degrees * F and the distribution of minimun temperatures in February is approximately Normal. What percentage of days in February has minimum temperatures above freezing (.e. above 32^ F) ?

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