Question

MY LAST QUESTION PLEASE!.
Erin wants to know if warming up will help runners sprint faster. 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. To test the difference of means, she re-randomized the data 54 times and the differences are plotted in the dot plot below. What can Erin conclude from her study?

Answer 1

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.

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.

Answer 2

i think it's C

Answer 3

@_Smile_ @dan815 @rational

Answer 4

@Kainui @misty1212 @Miss_Panda @Misty_Ann

Answer 5

Why do u think it's C?

Answer 6

I don't give out direct answers all the time

Answer 7

because if you take -1 or 0 and increase in 2 , the difference is likely

Answer 8

can you guide me? @Miss_Panda

Answer 9

Yea hold up

Answer 10

@jim_thompson5910 @clynnew

Answer 11

so the difference in 2 is likely correct?

Answer 12

because they're better

Answer 13

or i mean faster when they warm up

Answer 14

I'm thinking so but to be correct ill ask @KyanTheDoodle

Answer 15

do you think the difference is significant too because there is a difference of 2 that's likely to occur?

Answer 16

i mean the difference in the mean

Answer 17

YesThe difference in the means is significant because a difference of 2 is very likely.

Answer 18

ok thank you so much for your help.

Answer 19

Welcome

Answer 20

it was wrong. :(

Answer 21

C is wrong people