Carefully Review the Case Description and answer the questions below. I strongly advise NOT looking at the data set as you think through these questions. It can make you think it is more complicated than it is.

With this small case, each person should individually think through these questions before you meet with your team. It is fine to change your mind after meeting with your team, but each individual should write up his/her own explanations for this individual submission. Get going right away! Please feel free to submit early and ask me to review!! I will give comments to guide you so you can correct and resubmit.

1. To help determine what kind of anova is used in this study to answer the research questions, answer the following:
   1. What are the response variables? In other words, what variables are measured in the study? This will determine the number of separate ANOVAs you will do. Once you have determined this, you should go into the data and create a separate worksheet for each response variable. This should help you to better see what you should be doing.
   2. Do you have one or 2 factors (groups of treatments)?
   3. What are the levels of the factor(s)?
   4. Explain in detail what kind of anova is used in this study to answer the research questions. For now, assume required conditions have been met. You will be checking them in the case.
2. Discuss Type 1 and Type 2 errors in the context of the case. What actions might the user of your findings make based on the possible hypothesis testing conclusions? What are the consequences of those actions?
3. Explain how you would check for outliers. In Case 1, we looked at 2 different types of graphs that help identify outliers. One of those is correct here.
4. What are the required conditions that your data must meet for ANOVA? Explain how you will check them.

CASE DESCRIPTION NEEDED FOR ABOVE:

Acute Otitis media, an infection of the middle ear, is a common childhood illness. There are various ways to treat the problem. To help determine the best way, researchers conducted an experiment. One hundred and eighty children between 10 months and two years with recurrent acute otitis media were divided into three equal groups. Group 1 was treated by surgically removing the adenoids (adenoidectomy), the second was treated with the drug Sulfafurazole, and the third with a placebo. Each child was tracked for 2 years during which time all symptoms and episodes of acute otitis media were recorded. (Keller, 9th Edition, p. 588)

Researchers collected data for the following variables: Number of episodes of the illness, number of visits to a physician because of any illness, number of prescriptions, number of days with symptoms of respiratory infection. Can the researchers conclude that there are differences between the three groups with respect to the number of episodes, number of physician visits, number of prescriptions, and number of days with symptoms of respiratory infections? .