15. S7 points 1 Previous Answers BowskyintoStatt 2 PR 026 2100 Submissions Used

Question

15. S7 points 1 Previous Answers BowskyintoStatt 2 PR 026 2100 Submissions Used My Notes Ask Your Teache (a) For runners in a race, a low time means a faster run. The winners in a race have the shortest running times. Is at more desirable to have a finish time with a high or a low percentile when running a race? For runners in a race it is more desirable to have a lo means a short time which is Laster percentile for a finish time. A low percentile (b) The 20h percentile of run times in a partioular race is 5.2 minutes. Write a sentence interpreting the 20h percentile in the context of the situation. (Enter you answers as whole numbers.) The 20h percentile means that [ of runners finished the race in 5.2 minutes or longer X % of runners finished the race in 5.2 minutes or less and (c) A bicyclist in the 90" percentile of a bicycle race completed the race in 1 hour and 12 minutes. ts he among the fastest or slowest cyclists in the race? Write a sentence Interpreting the 90" percentile in the context of the situation He is among the slowest cyclists because 90% of cyclists were faster than him

Explanation / Answer

a.

For runners in a race it is more desirable to have a low percentile for a finish time. A low percentile means a short time which is faster.

b.

The 20th percentile means that, 20% of runners finished the race in 5.2 minutes or less. 80% of runners finished the race in 5.2 minutes or longer.

c.

He is among the slowest cyclists because 90% of cyclists were faster than him.

90% of cyclists had a finish time of one hour, 12 minutes or less. Only 10% of cyclists had a finish time of one hour, 12 minutes or longer.

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