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09-02-2024
Mathematics

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A researcher selects a sample from a population with µ= 30 and uses the sample to evaluate the effect of a treatment. After treatment, the sample has a mean of M= 32 and a variance of s²= 6. If Cohen’s d is used to measure the size of the treatment effect, which of the following would have no effect on the value of Cohen’s d?
Group of answer choices
O an increased sample size
O an increased sample mean
O an increase sample variance
O Each of these of these aspects will influence the value of Cohen’s d.

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