The Two Sample T-test with One Variance Unknown
نویسندگان
چکیده
We consider the situation in two sample testing when one variance is assumed to be known while the other variance is considered unknown. This situation arises, for example, when one is interested in comparing a standard treatment with a new treatment. Although this situation occurs relatively infrequently, our example discusses the important tool of moment matching and makes the classic two sample Satterthwaite t-approximation transparent.
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