Question: A test is given and the average ( X ) score was 190, with a SD ( X ) of 50.Assuming a normal distribution for

A test is given and the average (X) score was 190, with a SD (X) of 50.Assuming a normal distribution for the grades, find the dividing line (test scores) between the A's, B's, C's, D's, and E's.The bottom 13% will be assigned the E's, the next 13% will be the D's, 50% will be the C's, the next 15% the B's and the top 9% will be the A's.

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