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8. For the standard normal distribution, find the area between the z scores of -1.50 and 2.50. 9. Assume IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a randomly selected person has an IQ score less than 115. 10. Assume IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a randomly selected person has an IQ score between 88 and 112. 11. If 25 people are randomly selected, find the probability that their mean IQ score is less than 103.

8. For the standard normal distribution, find the area between the z scores of -1.50 and 2.50. 9. Assume IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a randomly selected person has an IQ score less than 115. 10. Assume IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a randomly selected person has an IQ score between 88 and 112. 11. If 25 people are randomly selected, find the probability that their mean IQ score is less than 103.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Answer questions 8, 9, 10, and 11
8. For the standard normal distribution, find the area between the z scores of -1.50 and 2.50. 9. Assume IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a randomly selected person has an IQ score less than 115. 10. Assume IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a randomly selected person has an IQ score between 88 and 112. 11. If 25 people are randomly selected, find the probability that their mean IQ score is less than 103.
Transcribed Image Text:8. For the standard normal distribution, find the area between the z scores of -1.50 and 2.50. 9. Assume IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a randomly selected person has an IQ score less than 115. 10. Assume IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a randomly selected person has an IQ score between 88 and 112. 11. If 25 people are randomly selected, find the probability that their mean IQ score is less than 103.
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