Will mark brainliesterin wants to know if warming up will 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? 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.

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

Step-by-step explanation:

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 seconds.

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

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.

pretty sure 750 each month!

step-by-step explanation: