Please include the following general headings for each section of the written exam within your Word document:Part I: Essay Questions
Part II: Research Study Critique
Your complete Word document must include a title page with the following:
Part I: Essay Questions There are three essay questions in this section. You must answer all three questions. The length of each essay should be one to two double-spaced pages (excluding title and reference pages). Use 12-point font and format your paper with regular 1-inch margins. Do not include the essay prompt in your document. It will not count toward the length requirement for your essays.
Essay 1 A group of researchers conducted an experiment to determine which vaccine is more effective for preventing getting the flu. They tested two different types of vaccines: a shot and a nasal spray. To test the effectiveness 1000 participants were randomly selected with 500 people getting the shot and 500 the nasal spray. Of the 500 people were treated with the shot 80 developed the flu and 420 did not. Of the people who were treated with the nasal spray 120 people developed the flu and 380 did not. The level of significance was set at .05. The proportion of people who were treated with the shot who developed the flu = .16 and the proportion of the people who were treated with the nasal spray was .24. The calculatedpvalue = .0008. For this essay describe the statistical approaches (e.g. identify the hypotheses and research methods) used in this excerpt from a research study. Interpret the statistical results and examine the limitations of the statistical methods. Finally evaluate the research study as a whole and apply what you have learned about hypothesis testing and inferential statistics by discussing how you might conduct a follow-up study.
Your essay must address the following points:
Essay 2A researcher has investigated the relationship between IQ and grade point average (GPA) and found the correlation to be .75.
For this essay critique the results and interpretation of a correlational study.
Your essay response must address the following questions:
Essay 3 A researcher has recorded the reaction times of 20 individuals on a memory assessment. The following table indicates the individual times:
4.7
7.3
4.1
9.5
15.2
4.3
9.5
2.7
3.1
9.2
2.9
8.2
7.6
3.5
2.5
9.3
4.8
8.5
8.1
In this essay demonstrate your ability to organize data into meaningful sets calculate basic descriptive statistics interpret the results and evaluate the effects of outliers and changes in the variables. You may use Excel one of the many free online descriptive statistics calculators or calculate the values by hand and/or with a calculator.
Next separate the data into two groups of 10; one group will be the lower reaction times and the second group will be the higher reaction times. Then address the following points in your essay response:
Lastly double each sample by repeating the same 10 data points in each group. You will have a total of 20 data points for each group. After completing this address the following in your essay response:
Part B: Research Study Critique In this second portion you will identify and critically evaluate a quantitative research article based on a social science topic. Your selected article must include a research question(s) and/or hypothesis(es) and utilize statistical analyses covered in the course. The article must be peer-reviewed and published within the last 10 years.
In the body of your critique describe the statistical approaches used the variables included the hypothesis(es) proposed and the interpretation of the results. In your conclusion suggest other statistical approaches that could have been used and if appropriate suggest alternative interpretations of the results. This process will allow you to apply the concepts learned throughout the course in the interpretation of actual scientific research. Your critique must include the following sections:
The Research Study Critique: