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Suppose that, for a certain exam, a teacher grades on a curve. Frequency 0.1% 2.2% 34.1% 34.1% 2.2% What score would be necessary to obtain an A? or above 0.1% 13.6% 13.6% μ-30 μ-20 μ-lo A μ+1σ μ+2σ μ+30 It is known that the mean is 55 and the standard deviation is 10. There are 35 students in the class.

Suppose that, for a certain exam, a teacher grades on a curve. Frequency 0.1% 2.2% 34.1% 34.1% 2.2% What score would be necessary to obtain an A? or above 0.1% 13.6% 13.6% μ-30 μ-20 μ-lo A μ+1σ μ+2σ μ+30 It is known that the mean is 55 and the standard deviation is 10. There are 35 students in the class.

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Suppose that, for a certain exam, a teacher grades on a curve. Frequency 0.1% 2.2% 34.1% 34.1% 2.2% What score would be necessary to obtain an A? or above 0.1% 13.6% 13.6% μ-30 μ-20 μ-lo A μ+lo +20 +30 It is known that the mean is 55 and the standard deviation is 10. There are 35 students in the class.
Transcribed Image Text:Suppose that, for a certain exam, a teacher grades on a curve. Frequency 0.1% 2.2% 34.1% 34.1% 2.2% What score would be necessary to obtain an A? or above 0.1% 13.6% 13.6% μ-30 μ-20 μ-lo A μ+lo +20 +30 It is known that the mean is 55 and the standard deviation is 10. There are 35 students in the class.
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