Q1) A survey was designed and conducted to rate the services of two competing drug companies that produce medication to control high blood pressure. The study was implemented based on administering the two types of drugs to separate patient groups. Both groups were evaluated after using the drugs for a period of four months and the patients' improvement levels in both groups were assessed in a survey. Below are the results reported after the period:

Company 1 :

n1: 175 xbar1= 3.85 s1=0.64

Company 2:

n2= 415 xbar2= 4.1 s2= 0.54

Survey results were reported from 1-5

Build the confidence interval for the mean difference between the two patient populations.

Discuss the data analyzed and the calculations completed. Provide an interpretation of the results based on the calculations completed.

All the calculations completed in Rstudio could be added as a screenshot with proper captions.