Question
A researcher plans to compare two treatment conditions by measuring one sample in treatment 1 and a second sample in treatment 2. The researcher will then compare the scores for the two treatments. Suppose there is a difference between the two groups of scores. How could the difference have been caused by the treatments? Treatments 1 and 2 affect individuals differently, so the scores of individuals receiving treatment 1 are different from those of individuals receiving treatment 2. The effect of a treatment depends on whether the individual is included in the sample or not. The two samples were drawn from two different populations. The two treatments do not have different effects, but the individuals in one sample do not behave exactly like the individuals in the second sample. How could the difference simply be sampling error? The effect of a treatment depends on whether the individual is included in the sample or not. The two samples were drawn from two different populations. Treatments 1 and 2 affect individuals differently, so the scores of individuals receiving treatment 1 are different from those of individuals receiving treatment 2. The two treatments do not have different effects, but the individuals in one sample do not behave exactly like the individuals in the second sample.
Explanation / Answer
a) Option D is Correct. The two treatments do not have different effects but the individual in one sample do not behave exactly like the individual in second sample
b) Option B is Correct
