Question

Identify a problem in healthcare that could be illuminated by research. Develop a research question and describe a research design to address it. Be sure to identify your dependent and independent variables, sampling method, and statistical tests. Write a null and alternative hypothesis for your research study. Respond to two peers regarding their study design and their statistical analysis.

Answer 1

Answer:

giventhat

Suppose a pharmaceutical company wants to test the effectiveness of a particular drug.

So, in this case the research question is how successfully the drug can help to recover from some disease.

We have to apply the drug for multiple cases, and check the proportion of times it's effectively removing disease.

The independent variable in this case will be the application of the drug and dependent variable is whether the person has recovered or not.

Here the sampling strategy could be to take say 200 cases in which the drug has been applied and to note it down for each cases whether the person is cured or not.

The outcome will be either recovered or not. So the outcome is binary. We have go for one-proportion test in this circumstances. Say the manufacturer's claim is it is effective in 95% cases.

So we have to test H0: p = 0.95 against H1: p < 0.95, where, p is the proportion of cases in which drug was effective.