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Mathematics, 12.09.2019 19:30 chjam265

Aresearcher uses a repeated-measures design to compare individuals’ performance before treatment with their performance after treatment. if all the participants show improved performance of 8 or 9 points after treatment, what should the researcher find
a) a sample mean difference near zero.
b) the statistic near zero.
c) the variance of the difference scores is near zero.
d) none of the other options is correct.

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