Question: When should you use a pooled two-sample t test? always, because it is easier to calculate the pooled value of the t statistic O only

When should you use a pooled two-sample t test? always, because it is easier to calculate the pooled value of the t statistic O only when you do not have software available to perform the unequal variances two-sample t test never, because its assumptions are inaccurate for all real-world datasets O only when the variances within each of the two groups are different from each other

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