2.79 Marathon results 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? Answer by providing statistical justification. (Source: https://www

.iaaf.org/)