4. Assuming a standard normal distribution, if the mean of a set of data was 50 andthe standard deviation was 8, what percentage of the data values would you expectto fall between 50 and 58?K3=5. In #4 above, what percentage of the data values would you expect to fall between50 and 66?6. In #4 above, what percentage of the data values would you expect to be below 42?7. Assuming a standard normal distribution, what is the area under the curve betweenthe mean and the z-value of 2.24?

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Answered: 4. Assuming a standard normal…

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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If a standard deviation is 1.4 away from a mean of 7.2 what is the z score of an x value of 10
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Do question 1
Suppose the scores on an exam have a mean of 70 with a standard deviation of 10. If one student hasa test result with a z-score of -0.8 and a second student has a test result with a Z-score of 1.8, how many points higher was the second student's score than that of the first? O a. 10 O b. 20 O c. 2.6 O d. 13 O e. 26
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Student Satisfaction sent from average to the 60th percentile (z score = .2533). Dr. Reed wants to know the projected impact on test scores. All she knows is that Student Satisfaction and Student Test scores are correlated at .43 and the current average test score is 81% with a standard deviation of 5%. Show your work
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4. Assuming a standard normal distribution, if the mean of a set of da the standard deviation was 8, what percentage of the data values wo to fall between 50 and 58? K3=