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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
s_{x}
38.7
39.2
1. What are the appropriate hypotheses?
A) H_{0}: μ_{1} = μ_{2}. H_{1}: μ_{1} > μ_{2}
B) H_{0}: μ_{1} ≠ μ_{2}. H_{1}: μ_{1} < μ_{2}
C) H_{0}: μ_{1} = μ_{2}. H_{1}: μ_{1} < μ_{2}
D) H_{0}: μ_{1} = μ_{2}. H_{1}: μ_{1} ≠ μ_{2}
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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