Inspired by the Survey Conducted by Your School, You Plan $\bar { x } = 5.8$

Inspired by the survey conducted by your school, you plan your own study examining victimization rates of students enrolled in colleges or universities in your city and you are aiming for a confidence interval of 95%. Also assume that you want to be wrong by only one victimization on either side of the population mean. You are wondering what sample size you should select. You know the mean ( $\bar { x } = 5.8$ ) and standard deviation (s = 3.1) of the study conducted by your school (you are treating it as a pilot study). Calculate the adequate sample size.