The average score of one of your Math exams was 75 with a standard deviation of 20. Assuming the scores are normally stributed if your corresponding z-score was 1.5. What precentage of the students got a score above 90? a. 6.68% b. 77.34% c. 22.66% d. 493.32%
The average score of one of your Math exams was 75 with a standard deviation of 20. Assuming the scores are normally stributed if your corresponding z-score was 1.5. What precentage of the students got a score above 90? a. 6.68% b. 77.34% c. 22.66% d. 493.32%
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 22PFA
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The average score of one of your Math exams was 75 with a standard deviation of 20. Assuming the scores are normally stributed if your corresponding z-score was 1.5. What precentage of the students got a score above 90?
a. 6.68%
b. 77.34%
c. 22.66%
d. 493.32%
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