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Lars wants to know if warming up will help runners sprint faster. Twenty-four track and field athletes volunteered to participate in his study. He randomly assigns 12 athletes to warm-up for 10 minutes. All 24 participants sprint the same distance. He calculates the mean for each group and determines that the mean for the warm-up group was 7.8 seconds and the mean for the other group was 9.8 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 Lars conclude from her study?

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

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XBoostKing

Answer:

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

Step-by-step explanation:

Parrain

Based on Lars's findings in the research, the conclusion would be that The difference in the means is significant because a difference of 2 is not very likely.

Why is the mean significant?

The difference in the means for the two groups is:
= 9.8 - 7.8 seconds

= 2 seconds

This difference is quite significant because the dot plot shows that it is not likely that there will be such a huge difference in the time ran by both groups.

In conclusion, option B is correct.

Find out more on significant differences at https://brainly.com/question/15848236.

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