Question
Scores on a university exam are Normally distributed with a mean of 78 and a standard deviation of 8. The professor teaching the class declares
Scores on a university exam are Normally distributed with a mean of 78 and a standard deviation of 8. The professor teaching the class declares that a score of 70 or higher is required for a grade of at least C.
Using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least C?
The scores on the Wechsler Adult Intelligence Scale are approximately Normal with = 100 and = 15. The proportion of adults with scores between 80 and 120 is closest to?
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College Algebra Graphs and Models
Authors: Marvin L. Bittinger, Judith A. Beecher, David J. Ellenbogen, Judith A. Penna
5th edition
321845404, 978-0321791009, 321791002, 978-0321783950, 321783956, 978-0321845405
