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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
Run the appropriate regression to estimate the average variable cost function (AVC) for Sting Rays. Evaluate the statistical significance of the three estimated parameters usi
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