We know very well by now that both the means of the two groups, and some measure

Question

We know very well by now that both the means of the two groups, and some measure of variability (such as standard deviation) are necessary for computing a T-Test. What THIRD piece of information helps mathematically determine the outcome of a T-Test?

Number of confounding variables

Construct validity

Severity of the experimental manipulation (such as drug dosage, or difference in difficulty of test)

Number of participants/subjects

Number of confounding variables

Construct validity

Severity of the experimental manipulation (such as drug dosage, or difference in difficulty of test)

Number of participants/subjects

Explanation / Answer

Answer is C

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