Which of the following statements would be true of the pooled version of the t test for independent samples?
A. Sample size has no effect on the value of the t statistic calculated.
B. It should not be used when you have unequal sample sizes.
C. Calculating the t test when more than four groups are included in an experiment becomes difficult.
D. It can be used unless there are large differences in sample sizes and standard errors.
Answer: D
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