Mathematics, 02.02.2021 18:30 devenaire

The dot plot shows the results of two random samples measuring the mean time, in hours, spent working out in a given week. Which statement is true?

a
The slight difference in the distributions indicates that the training did not significantly change the students' race times.
b
The mean time the students took to finish the 30 free-throws decreased by about 3 seconds after training.
c
The mean time the students took to finish the 30 free-throws increased by about 3 seconds after training.
d
The significant difference in the distributions indicates that the training did not significantly change the students' race times.

The dot plot shows the results of two random samples measuring the mean time, in hours, spent worki

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The dot plot shows the results of two random samples measuring the mean time, in hours, spent workin...