(2 points) In 2002 the Supreme Court ruled that schools could require random drug tests of students participating in com

[answerhappygod]

2 Points In 2002 The Supreme Court Ruled That Schools Could Require Random Drug Tests Of Students Participating In Com 1 (77.33 KiB) Viewed 21 times

(2 points) In 2002 the Supreme Court ruled that schools could require random drug tests of students participating in competitive after-school activities such as athletics. Does drug testing reduce use of illegal drugs? A study compared two similar high schools in Oregon. Wahtonka High School tested athletes at random and Warrenton High School did not. In a confidential survey, 7 of 145 athletes at Wahtonka and 27 of 126 athletes at Warrenton said they were using drugs. Regard these athletes as SRSs (simple random samples) from the populations of athletes at similar schools with and without drug testing. (a) You should not use the large-sample confidence interval. Why not? At least one sample has too few successes. (b) The plus four method for a two-sample confidence interval adds four observations in total: two observations, a success and a failure, to each sample. What are the sample sizes and the numbers of drug users after you do this? Wahtonka sample size: 8 Warrenton sample size: 147 Wahtonka drug users: 28 Warrenton drug users: 147 (c) Give the plus four 99.9% confidence interval for the difference between the proportion of athletes using drugs at schools with and without testing. Interval: --2994 to -.0292