MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Suppose that the amount of time that students spend studying in the library in one sitting is normally distributed with mean 48 minutes and standard deviation 19 minutes. A researcher observed 9 students who entered the library to study. Round all answers to 4 decimal places where possible.

  1.  is the assumption of normal necessary? YesNo
  2. The top 15% of the total study time for groups of 9 students will be given a sticker that says "Great dedication". What is the least total time that a group can study and still receive a sticker? minutes

 

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