Research from the American Association of School Counselors suggests that 31.4% of elementary school students suffer from attention deficit disorder. Among a sample of 501 students at Ben Franklin Elementary School in Grand Forks, 150 were clinically diagnosed with attention deficit disorder. Is the prevalence of attention deficit disorder among students attending Ben Franklin Elementary School different from that claimed by the American Association of School Counselors? Run the appropriate test using a 5% level of significance
Step 1. Set up hypotheses and determine level of significance
Step 2. Select the appropriate test statistic
Step 3. Set up decision rule
Step 4. Compute the test statistic
Step 5. Conclusion