An oil change shop advertised to change oil in 15 minutes. Based on the data collected on a typical day, describe the probability which oil change will take 15 minutes or less time? Based on the data, do you think the business claim is valid? Describe why or why not.
Times (minutes): 6, 7.5, 9, 11, 11, 11.5, 12, 12.5, 13, 14, 15, 16, 17, 17, 17.5, 18.5, 20.5, 22, 24, 29