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October 21, 2014

Homework Help: Statistics

Posted by Penny on Saturday, March 16, 2013 at 1:57pm.

During September, the average temperature of Laurel Lake is 64.2 and the standard deviation is 3.2. Assume the variable is normally distributed. For a randomly selected day, find the probability that the temperature will be

a. Above 62

b. Below 67

c. Between 65 and 68

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