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Mathematics 23 Online
OpenStudy (anonymous):

The average summer temperature in Anchorage is 69°F. If the daily temperature is normally distributed with a standard deviation of 7°F, what percentage of the time would the temperature be between 55°F and 76°F? A: 34.0% B: 47.5% C: 68.0% D: 81.5% E: 99.7%

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