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Exercise 1.3. A normally distributed random variable has a mean of 449: a. If a score of 325 has a standard normal score-1.38, compute for the variance of X. b. If a score of 404 is three standard deviations below the mean, find the standard deviation of X. c. If a score of 433 lies two standard deviations above the mean, find the variance of X.

Exercise 1.3. A normally distributed random variable has a mean of 449: a. If a score of 325 has a standard normal score-1.38, compute for the variance of X. b. If a score of 404 is three standard deviations below the mean, find the standard deviation of X. c. If a score of 433 lies two standard deviations above the mean, find the variance of X.

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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Exercise 1.3. A normally distributed random variable has a mean of 449: a. If a score of 325 has a standard normal score-1.38, compute for the variance of X. b. If a score of 404 is three standard deviations below the mean, find the standard deviation of X. c. If a score of 433 lies two standard deviations above the mean, find the variance of X. 38 STATISTICS AND PROBABILITY: A MODERN APPROACH FOR THE NEW GENERATION
Transcribed Image Text:Exercise 1.3. A normally distributed random variable has a mean of 449: a. If a score of 325 has a standard normal score-1.38, compute for the variance of X. b. If a score of 404 is three standard deviations below the mean, find the standard deviation of X. c. If a score of 433 lies two standard deviations above the mean, find the variance of X. 38 STATISTICS AND PROBABILITY: A MODERN APPROACH FOR THE NEW GENERATION
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