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For the following problem, please draw yourself a distribution for all of the items.  You need not submit it with your homework, but it will help you get a visual of your work and should facilitate your understanding of this and future material.  Assume that the average wait time for a cup of coffee is 1.7 minutes (SD = .35).  Calculate the z-scores for the following wait times 7 minutes 1 minute 45 seconds 5 minutes Do any of these times appear to be unusual? How so?

For the following problem, please draw yourself a distribution for all of the items.  You need not submit it with your homework, but it will help you get a visual of your work and should facilitate your understanding of this and future material.  Assume that the average wait time for a cup of coffee is 1.7 minutes (SD = .35).  Calculate the z-scores for the following wait times 7 minutes 1 minute 45 seconds 5 minutes Do any of these times appear to be unusual? How so?

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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For the following problem, please draw yourself a distribution for all of the items.  You need not submit it with your homework, but it will help you get a visual of your work and should facilitate your understanding of this and future material.  Assume that the average wait time for a cup of coffee is 1.7 minutes (SD = .35).  Calculate the z-scores for the following wait times

  1. 7 minutes
  2. 1 minute
  3. 45 seconds
  4. 5 minutes
  5. Do any of these times appear to be unusual? How so?
Expert Solution
Step 1

Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.

Thus, the z-score of that random variable X is z = (X – µ)/σ.

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