A Researcher Wishes to Determine Whether People with High Blood $\text { Treatment Group }$

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 treatment population mean μ1 is smaller than the control population mean μ2.Test the claim using a significance level of 0.01. $\text { Treatment Group }$ $\text { Control Group }$ n1 = 85 n2 = 75 $\overline{x_1}$ = 189.1 $\overline{x_2}$ = 203.7
s1 = 38.7 s2 = 39.2
df = 155.