The results for the first 20 finishers of the Womens Marathon in the World Athletics Championships in
Question:
The results for the first 20 finishers of the Women’s Marathon in the World Athletics Championships in Beijing in 2015 appears to have a roughly bell-shaped distribution with a mean of 9073 seconds and a standard deviation of 161.4 seconds.
Among the first 20 runners to finish the race, the finishing time of the last finalist was 9377 seconds. Is this an unusual result?
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Related Book For 
Statistics The Art And Science Of Learning From Data
ISBN: 9781292444765
5th Global Edition
Authors: Alan Agresti, Christine A. Franklin, Bernhard Klingenberg
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