Question

A basketball coach asks half of his players to stretch before each game; the other players do not stretch. After a month of games, she analyzes their playing stats. She concludes the stretching helped improve their performance on the court. How can the coach test the means to be sure the results not likely to happen by chance? Answers are in the photo!

Answer 1

C

Explanation:

If the coach repeats the experiment, she will get more accurate results. This is because the more subjects (in this case, players), the more people to test on, and the lesser chance of an outlier (in this case, someone with abnormally high or low performance).