the class average is 85% and the standard deviation is 3%. a student from the class earned a 89%. what proportion of the class scored higher than the student assuming the grades are distributed normally? please round your answers to the nearest thousandth. (you'll need an r window and xpnorm to answer this.)

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06-12-2022
Mathematics

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the class average is 85% and the standard deviation is 3%. a student from the class earned a 89%. what proportion of the class scored higher than the student assuming the grades are distributed normally? please round your answers to the nearest thousandth. (you'll need an r window and xpnorm to answer this.)

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