You have been doing research for your statistics class on the prevalence of binge drinking among teens

You have been doing research for your statistics class on the prevalence of binge drinking among teens.

a. According to 2011 Monitoring the Future data, the average binge drinking score, for this sample of 914 teens, is 1.27, with a standard deviation of 0.80. Binge drinking is defined as the number of times the teen drank five or more alcoholic drinks during the past week Construct the 95% confidence interval for the true average severe binge drinking score.
b. Your roommat e is concerned about your confidence interval calculation, arguing that severe binge drinking scores are not normally distributed, which in turn makes the con- fdence interval calculation meaningles. Assume your roommate is correct ahout rie distribution of severe binge drinking scores. Does that imply that the calculation of a confidence interval is not appropriate? Why or why not?