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A formula for the z test for comparing two means from independent samples. It also provides examples of one-tailed and two-tailed tests for hypothesis testing. a step-by-step guide to conduct a hypothesis test for the difference in hotel room rates between New Orleans and Phoenix. The test uses a significance level of 0.05 and assumes two samples of 50 hotels each with known standard deviations. The document concludes with a decision and summary of the results.
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Two-Tailed
MEAN: TWO SAMPLES HYPOTHESIS TESTING A. MEAN Formula for the z Test for Comparing Two Means from Independent Pelee These tests can also be one-tailed, using the following hypotheses: Right-tailed | Left-tailed Hy thy = Hy o Hy by ~ by = 0 | Hy! Hy = Hy or Hyt fly ~ My = 0 HN: py > My Ay fy by? 0 Ay py S by Ay fy ~ wy 0