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Quantitative Usability, Statistics & Six Sigma by Jeff Sauro




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Asked on September 29, 2008 :: Question was Answered in 2 Days 20 Hours & 57 Minutes

Question : Each student in an experiment was told to look at 100 cars and count the number of people wearing the seat belts. The mean score for the class was found to be 44, and standard deviation =7. Now, a student reported finding 62 seat belt users out of 100. Do you think the student just made up a number rather than actually counting?

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