Question

MEDALS GIVEN: Carter wants to know if warming up will help runners sprint faster. Thirty track and field athletes volunteered to participate in his study. He randomly assigns 15 athletes to warm-up for 10 minutes. All 30 participants sprint the same distance. She calculates the mean for each group and determines that the mean for the warm-up group was 10.7 seconds and the mean for the other group was 13.2 seconds. To test the difference of means, he re-randomized the data 54 times and the differences are plotted in the dot plot below. What can Carter conclude from his study?

Answer 1

@mathmale

Answer 2

please help

Answer 3

The difference in the means is significant because a difference of 2.5 is very likely.

The difference in the means is not significant because a difference of 2.5 is very likely.

The difference in the means is significant because a difference of 2.5 is not very likely.

The difference in the means is not significant because a difference of 2.5 is not very likely.

Answer 4

@mathmale

Answer 5

@jim_thompson5910 @Nnesha I'm stuck on this, thoughts?