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Unequal variances between the two populations

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Reference no: EM131042141

A researcher wishes to determine whether people with high blood pressure can reduce their blood pressure, measured in mm Hg, by following a particular diet. Use a significance level of 0.05 to test the claim that the treatment group is from a population with a smaller mean than the control group. Assume unequal variances between the two populations.

 

Treatment

Control

n

35

28

x ¯  

189.1

203.7

sx

38.7

39.2

1. What are the appropriate hypotheses?

A) H0: μ1 = μ2. H1: μ1 > μ2

B) H0: μ1 ≠ μ2. H1: μ1 < μ2

C) H0: μ1 = μ2. H1: μ1 < μ2

D) H0: μ1 = μ2. H1: μ1 ≠ μ2

Reference no: EM131042141

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