8. [Chapter 4.1.5] Test scores followed a near-normal distribution of Score ~ N(47,2). a. What percentage of scores are more than 1 standard deviation away from the mean? Is it higher or lower than expected? b. What percentage of scores are more than 2 standard deviations away from the mean? Is it higher or lower than expected? 40.5 43.1 43.3 43.5 45.1 45.2 45.5 46.3 46.9 47.2 47.7 48.3 48.9 49.3 50.4 50.6 44.7 46.7 48.8 52.7
8. [Chapter 4.1.5] Test scores followed a near-normal distribution of Score ~ N(47,2). a. What percentage of scores are more than 1 standard deviation away from the mean? Is it higher or lower than expected? b. What percentage of scores are more than 2 standard deviations away from the mean? Is it higher or lower than expected? 40.5 43.1 43.3 43.5 45.1 45.2 45.5 46.3 46.9 47.2 47.7 48.3 48.9 49.3 50.4 50.6 44.7 46.7 48.8 52.7
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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![8. [Chapter 4.1.5] Test scores followed a near-normal distribution of Score ~ N(47,2).
a. What percentage of scores are more than 1 standard deviation away from the
mean? Is it higher or lower than expected?
b.
What percentage of scores are more than 2 standard deviations away from the
mean? Is it higher or lower than expected?
40.5
43.1 43.3 43.5
45.1
45.2 45.5 46.3
46.9 47.2 47.7
48.3
48.9 49.3 50.4 50.6
44.7
46.7
48.8
52.7](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe142ce47-7019-44e1-8d02-83a3de7d22f9%2F1aba71d1-ba69-4c2b-9c79-40f5df6bc2ec%2Fxetiotc_processed.png&w=3840&q=75)
Transcribed Image Text:8. [Chapter 4.1.5] Test scores followed a near-normal distribution of Score ~ N(47,2).
a. What percentage of scores are more than 1 standard deviation away from the
mean? Is it higher or lower than expected?
b.
What percentage of scores are more than 2 standard deviations away from the
mean? Is it higher or lower than expected?
40.5
43.1 43.3 43.5
45.1
45.2 45.5 46.3
46.9 47.2 47.7
48.3
48.9 49.3 50.4 50.6
44.7
46.7
48.8
52.7
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