Question
The scores on a psychology exam were normally distributed with a mean of 68 and a standard deviation of 9. A failing grade on the
The scores on a psychology exam were normally distributed with a mean of 68 and a standard deviation of 9. A failing grade on the exam was anything 2 or more standard deviations below the mean. What was the cutoff for a failingscore? Approximately what percentage of the studentsfailed?
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Essentials Of College Algebra
Authors: Margaret L Lial, John E Hornsby, David I Schneider, Teresa McGinnis
10th Edition
0321970632, 9780321970633
