During September, the average temperature in Keystone Lake is 71.2, and the standard deviation is 3.4. For

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During September, the average temperature in Keystone Lake is 71.2°, and the standard deviation is 3.4°. For a randomly selected day, find the probability that the temperature of the lake is less than 63°. Based on your answer, would this be a likely or unlikely occurrence? Assume the variable is normally distributed.
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