Multiple Choice
A researcher uses a repeated-measures design to compare individuals' performance before treatment with their performance after treatment.If all of the participants show improved performance of 8 or 9 points after treatment,what should the researcher find?
A) The sample mean difference is near zero.
B) The t statistic is near zero.
C) The variance of the difference scores is near zero.
D) None of the other options is correct.
Correct Answer:
Verified
Correct Answer:
Verified
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