Question: A variable is normally distributed with mean 12 and standard deviation 2. a. Find the percentage of all possible values of the variable that lie

A variable is normally distributed with mean 12 and standard deviation 2. a. Find the percentage of all possible values of the variable that lie between 7 and 13. b. Find the percentage of all possible values of the variable that exceed 9. c. Find the percentage of all possible values of the variable that are less than 11

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