0.8643 run the 100 meter dash in 15.22 seconds or faster.
We first compute the z-score for this time:
Using a z-table (http://www.z-table.com), we see the proportion of scores less than or equal to this is 0.8643.
We first compute the z-score for this time:
Using a z-table (http://www.z-table.com), we see the proportion of scores less than or equal to this is 0.8643.