Practice
With the growth of internet service providers, a researcher decides to examine whether there is a correlation between cost of internet service per month.
Practice Does drinking milkshakes affect (alpha =.05) your weight? To see if milkshakes affect a persons weight you collected data from 5 sets of twins.
Example You give 100 random students a questionnaire designed to measure attitudes toward living in dormitories Scores range from 1 to 7 –(1 = unfavorable;
What if.... The two samples have different sample sizes (n)
