Statistics Solutions

(Step-by-Step) A researcher wishes to determine whether people with high blood pressure can reduce their blood pressure by following a particular diet.

Question: A researcher wishes to determine whether people with high blood pressure can reduce their blood pressure by following a particular diet. Use the sample data below to test the claim that the true population mean \({{\mu }_{1}}\) , is smaller than the controlled population mean \({{\mu }_{2}}\). Test the claim using a significance level of 0.01.

Treatment Group Control Group

n 1 = 41 n 2 = 38

\({{\bar{X}}_{1}}\) = 179.6 \({{\bar{X}}_{2}}\) = 199.7

s 1 = 34.7 s 2 =38.5

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