Question

Example: Alcohol abuse is a serious health problem on college campuses. A nationwide survey of student at 140 four-year colleges in the U.S. defined "frequent binge drinking" as "having five or more drinks in a row three or more times in the past two week period." of the 17,096 students surveyed, 3,314 met this criterion. Assume the data represent a SRS of 4-year colleges (Wechsler. 1994; Moore & McCabe, 2006, p. 537). Calculate the prevalence of frequent binge drinking. Include a 95% confidence interval for the estimate.

Answer 1

91. X = 19.9 , 5=6, n=16 309,05 = 8 tollis leon) 90%(I = t t to = I TINV(O. I *** (,1),( 2 per avere ? Excelfu 21 ETINUO 1,15) = 19.9 + 1.753 = 19.9 £ 2.63 =((13.9.-2.63), (19.9 +2.63) = |(17.27, 22:53) 22