If all of the participants in a repeatedmeasures study show

If all of the participants in a repeated-measures study show roughly the same 10-point difference between treatments, then the data are likely to produce a significant value for the t statistic.

Solution

TRUE. [ANSWER]

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Note that a hypothesis test is all about how consistent the difference is. As the difference is rounghly 10 most of the time, then there will likely be a significant difference.