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A variable is normally distributed with mean 15 and standard deviation 4. a. Find the percentage of...

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Statistics

A variable is normally distributed with mean 15 and standarddeviation 4.

a. Find the percentage of all possible values of the variablethat lie between 8 and 19.

b. Find the percentage of all possible values of the variablethat are at least 12.

c. Find the percentage of all possible values of the variablethat are at most 13.

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