Question
The mean number of words per minute (WPM) typed by a speed typist is 124 with a standard deviation of 15. What is the probability
The mean number of words per minute (WPM) typed by a speed typist is 124 with a standard deviation of 15. What is the probability that the sample mean would be greater than 127 WPM if 84 speed typists are randomly selected? Round your answer to four decimal places.
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John E Freunds Mathematical Statistics With Applications
Authors: Irwin Miller, Marylees Miller
8th Edition
978-0321807090, 032180709X, 978-0134995373
