On a police sergeant's examination, the historical mean score was 80 with a standard deviation of 20.
Question:
(a) Convert these four officers' scores to standardized z-values.
(b) Do you think there was sufficient reason to question these four exam scores? What assumptions are you making? (Data are from Detroit Free Press, March 19, 1999, p. 10A.)
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Related Book For
Applied Statistics In Business And Economics
ISBN: 9780073521480
4th Edition
Authors: David Doane, Lori Seward
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