Question: We wish to determine whether using a memory drug increases the performance on an exam. For this purpose,students were given the drug (D) and seen

We wish to determine whether using a memory drug increases the performance on an exam. For this purpose,students were given the drug (D) and seen that their scores had a mean ofwith a standard deviation of.students were given the placebo (P) (drug like substance having no effect) and seen that their scores had a mean ofwith a standard deviation of. Assume that the variances are equal. Use 0.05 significance level. What is the test statistic?

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