The following are distances (in miles) traveled to the workplace by 6 employees of a certain brokerage firm. 20,9,18,13,16,20. Find the standard…

The following are distances (in miles) traveled to the workplace by 6 employees of a certain brokerage firm. 20,9,18,13,16,20. Find the standard deviation of this sample of distances. Round your answer to at least two decimal places.