Let X, the grade of a randomly selected student in a test of a ISM course, be a noimal random variable. A professor is s

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Let X The Grade Of A Randomly Selected Student In A Test Of A Ism Course Be A Noimal Random Variable A Professor Is S 1 (256.69 KiB) Viewed 76 times

Let X, the grade of a randomly selected student in a test of a ISM course, be a noimal random variable. A professor is said to grade such a test on the cuive if he finds the average and the standard deviation o of the grades and then assigns letter grades according to the following table. Range of the grade ΧΣμ+σ μεX <μσ μ-σ<X <μ U-20 < X<M-o X<ul-20 A C D F Letter B grade Suppose that the professor of the probability course grades the test on the curve. Determine the percentage of the students who will get A, B, C, D, and F, respectively.