n the per-protocol population of a therapeutic equivalence trial the mean percent reduction in acne lesions at Week 12 vs. baseline was 53.27 for the test preparation (n=147) and 55.16 for the RLD preparation (n=153). The standard error of the difference in means was 5.526. Using method 2 for continuous outcomes, determine if therapeutic equivalence was achieved. 90% Classical CI: Equivalence LCL: Equivalence UCL: Decision?

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