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(b) Assuming that the distribution of times is mound shaped and approximately symmetric, approximately what percentage of times are between 27 and 39 minutes? (Hint: See Example 3.19. Use the Empirical Rule.) 95 % Less than 24 min or greater than 42 min? % Less than 24 min? %

(b) Assuming that the distribution of times is mound shaped and approximately symmetric, approximately what percentage of times are between 27 and 39 minutes? (Hint: See Example 3.19. Use the Empirical Rule.) 95 % Less than 24 min or greater than 42 min? % Less than 24 min? %

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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I understand part A, but I need assistance with part B. Please explain each of the three blanks.

The mean playing time for a large collection of compact discs is 33 minutes, and the standard deviation is 3 minutes. (a) What value (in minutes) is 1 standard deviation above the mean? One standard deviation below the mean? What values are 2 standard deviations away from the mean? 36 1 standard deviation above the mean 1 standard deviation below the mean 30 2 standard deviations above the mean 39 2 standard deviations below the mean 27 Less than 24 min or greater than 42 min? % (b) Assuming that the distribution of times is mound shaped and approximately symmetric, approximately what percentage of times are between 27 and 39 minutes? (Hint: See Example 3.19. Use the Empirical Rule.) 95 % Less than 24 min? ✔ min ✔ min min min % ✓
Transcribed Image Text:The mean playing time for a large collection of compact discs is 33 minutes, and the standard deviation is 3 minutes. (a) What value (in minutes) is 1 standard deviation above the mean? One standard deviation below the mean? What values are 2 standard deviations away from the mean? 36 1 standard deviation above the mean 1 standard deviation below the mean 30 2 standard deviations above the mean 39 2 standard deviations below the mean 27 Less than 24 min or greater than 42 min? % (b) Assuming that the distribution of times is mound shaped and approximately symmetric, approximately what percentage of times are between 27 and 39 minutes? (Hint: See Example 3.19. Use the Empirical Rule.) 95 % Less than 24 min? ✔ min ✔ min min min % ✓
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