Refer to the Georgia Student Survey data file on the text CD. Treat college GPA as the response variable and high school GPA as the explanatory variable, and suppose these students are a random sample of all University of Georgia students.
a. Can you conclude that these variables are associated in that population? Show all steps of the relevant significance test with significance level 0.05, and interpret.
b. Find a 95% confidence interval for the population slope. Interpret the endpoints, and explain the correspondence with the result of the significance test in part a.