Answer:The answer to this is 34 minutes and 50 seconds.Step-by-step explanation:First, I multiplied 23 x 2 = 46 because I wanted to see how much minutes it could be in 20 minutes.Then, I got the answer by getting the median.23 - 46the median of that is 34.5. Therefore, the expected time for 15 laps is 34 minutes and 50 seconds.Hope this Helped!!!!~Shane