5. 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 perform all steps for hypothesis testing or construct a 99% confidence interval for ₁ - ₂ where ₁ and ₂ represent the mean for the treatment group and the control group respectively.

Treatment Group Control Group

n1= 85 n2= 75

x-bar 1= 189.1 x-bar 2= 203.7

s1= 38.7 s1=39.2

How do I enter all this in excel to get the answers.