Answered: 13. A score that is 20 points above the…

13. A score that is 20 points above the mean corresponds to az-score of z=1.25. What is the standard deviation? 14. For a nonulation with

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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A distribution of values is normal with a mean of 137.6 and a standard deviation of 55.7.Find P72, which is the score separating the bottom 72% from the top 28%.P72 = Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
Based on data from a college, scores on a certain test are normally distributed with a mean of 1531 and a standard deviation of 324. Complete part below. b. Find the percentage of scores less than 1401.
Please assist with #17 second part? Thank you!
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12. How would your approximation of the actual mean and actual standard deviation change if you would have randomly selected 10 drivers instead of 5? Explain.
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SD is standard deviation
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Consider a value to be significantly low if its z score less than or equal to -2 or consider a value to be significantly high if its z score is greater than or equal to 2. A test is used to assess readiness for college. In a recent year, the mean test score was 20.2 and the standard deviation was 4.9. Identify the test scores that are significantly low or significantly high. What test scores are significantly low? Select the correct answer below and fill in the answer box(es) to complete your choice. (Round to one decimal place as needed.) OA. Test scores that are greater than OB. Test scores that are between OC. Test scores that are less than and (Round to one decimal place as needed. Use ascending order.) (Round to one decimal place as needed.) Select the correct answer below and fill in the answer box(es) to complete your choice. What test scores are significantly high? OA. Test scores that are less than OB. Test scores that are greater than OC. Test scores that are between and…
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