Grade point averages of graduating seniors at the University of Rochester must fall between 2.0 and 4.0.

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Grade point averages of graduating seniors at the University of Rochester must fall between 2.0 and 4.0.

Consider the possible standard deviation values: −10.0, 0.0, 0.4, 2.0, 6.0.

(a) Which is the most realistic value?Why?

(b) Which value is impossible? Why?

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