Statistically significant evidence to show the actual

This preview shows page 3 - 5 out of 6 pages.

statistically significant evidence to show the actual prevalence of depression among children and adolescents is above the previously reported prevalence of 12.5%.
8. A clinical trial is being conducted in order to determine the efficacy of a new drug used to treatRheumatoid arthritis. The efficacy of the medication will not only be determined by the physical improvement of symptoms but also by using a blood test to examine the concentration C-reactiveprotein (an inflammatory marker) in an individual’s blood. If the researcher wants a margin of error for the level of C-reactive protein to be less than or equal to 3.0 mg/dL, and if the standard deviation for C-reactive protein concentrations among arthritis patients was previously documented at 8 mg/dL, how many patients should be recruited for each group in the study assuming a 95% confidence interval will be used to quantify the mean differences between the control group and the treatment group?
9. A researcher notes that there seems to be a difference in the prevalence of high blood pressure among college-educated individuals who consume low amounts of processed foods and the prevalence of individuals who only have a high school education and consume high amounts of processed foods. Use the appropriate hypothesis to test for the independence of the two independent variables presented here at the 5% significance level to ensure confounding has not influenced the study’s results. Then, interpret your response.Diet Low in Processed FoodsNormal BPHigh BPTotalCollege Education12455179High School Education69152221Total193207400
Diet High in Processed FoodsNormal BPHigh BPTotalCollege Education6485149High School Education98153251Total162238400
10. True or False? Researchers use active-controlled trials to test new medications that are used

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture