Question

WILL MARK BRAINLIEST

Answer 1

Answer:

i believe its The difference in the means is significant because a difference of 2 is not very likely.

Step-by-step explanation:

Answer 2

Answer:

Option A is correct.

Step-by-step explanation:

Twenty-six track and field athletes volunteered to participate in her study.

She randomly assigns 13 athletes to warm-up for 10 minutes.

All 26 participants sprint the same distance.

She calculates the mean for each group and determines that the mean for the warm-up group was 10.9 seconds, and the mean for the other group was 12.9 seconds.

Difference is $12.9-10.9=2$ seconds.

The difference in the means is not significant because a difference of 2 is not very likely.