We are interested in developing a sampling distribution for the average time Olympic marathon runners complete a marathon in. This is based on the 2012 Men's Olympic Marathon which had 85 finishers. Data is available at StatKey, select Sampling Distribution for a Mean, then change the data set to Olympic Marathon-2e (Minutes). Summary Statistics Count Mean StDev Median 85 140.592 8.007 139 For samples of size n = 10 n = 10 use the standard error formula or create a sampling distribution by running at least 6000 samples based on their data set. The standard deviation for the population is . The standard error for the distribution of sample means from samples of size 10 is