n entrance test to a private high school has a bell-shaped distribution with mean 300 and standard deviation of 25.    (a)  What percentage of students score between 225 and 375?   (b)  What scores represent the middle 95% of all student scores on this test?   (c) A student that scores in the highest 16% are automatically admitted.  What is the minimal score a student has to receive to be automatically admitted into this school?

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