MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Suppose a class average on a test is 75 and the standard deviation is 10. if joe scores 80 on the exam, what is his z score?
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- A large chemistry course took their final exam. The mean was 75 with a standard deviation of 8. What proportion of people scores in the A range (90 or above)?arrow_forwardSuppose that the average score for the first exam was 70 with a standard deviation of 8. State each answer as a percentage. What proportion of students scored less than 70? What proportion scored more than 90?arrow_forwardOn a verbal skill test, the mean was 72 and the standard deviation was 7. If John scored 75, what was his z-score?arrow_forward
- What percentage of the widget Weights lie between 55 and 79 ounces when the mean is 61 and the standard deviation is 6 ?arrow_forwardMax scored an 80 on her psychology quiz, but the class as a whole averaged a 40. If the standard deviation was 10, what was Alicia's z-score?arrow_forwardAccording to the U.S. Census, the average adult woman is the United States is 65 inches tall and the standard deviation is 3 inches. If Zsike is 67 inches tall, what is her z-score?arrow_forward
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- Jack had an average score of 75 with a standard deviation of 3. Mikes z-score was 1.85. His actual score wasarrow_forwardLaura and learn that her GPA average in her school is a 3.6 with a standard deviation of 0.3. if her gpa 3.0 what is her z sxorearrow_forwardA person in the U.S. eats about 25 pounds of M&M's per year with a standard deviation of 3 pounds. How many M&M's would I have to eat to be in the top 20%?arrow_forward
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