The National Safe Driving Association has just hired you to conduct research on the prevalence of severe binge drinking among teens. You have created a scale ranging from 0 to 14 measuring the number of times teens drank 10 or more alcoholic beverages in a single sitting in the past 2 weeks. The average severe binge drinking score for your sample of 100 teens is 1.27, with a standard deviation of 0.80.
As sample size increases, how does the width of the confidence interval change (Width = Upper Limit – Lower Limit)? Explain how the sample size influences the standard error, margin of error, and precision of confidence interval?
The National Safe Driving Association has just hired you to conduct research on the prevalence of...