A high school teacher is attempting to determine the best way to teach students about sexually transmitted diseases (STDs). One-third of the students are asked to read textbook information on STDs, a second third are asked to google information, and the remaining third are provided with real-life examples (i.e., "this is how I got my STD stories") to read. Half of the students in each of these groups are asked to discuss what they read with a peer, while the other half are asked to discuss what they read with an adult. One week later, the teacher gives the student a test to determine how thetype of materialpresented and theage of the discussantimpacted their score on the test (max score = 40). Each participant was in only one condition.

• Conduct a two-way ANOVA including both "type of material" and "age of discussant" as variables in the analysis.Use the file "Lab 5 Homework.xlsx"whichis located on eCourseware.

How many independent variables were in this experiment? What are they? How many levels does each variable have? Is each variable a within- or between-subjects variable?

a.This experiment is a ___________ design (circle one).

Between-subjectsWithin-subjectsMixed

a.Using the results of the ANOVA and the graphs, describe the results of the experiment. Be sure to discuss the results for each main effect and the interaction. Do not worry about interpreting the post hoc tests.

Output ANOVA Summmary Sources SS df MS F p value age_of_discussant 17764.73 1 17764.73 282.23 0 . 000 type_of_material 291312 . 00 2 145656. 00 2314. 05 0 . 000 age_of_discussant X type_of_material 10035.27 2 5017 . 63 79.72 0. 000 Residual 9567 .50 152 62. 94 Total 328679.50 157 168501.31 Descriptives age_of_discussant type_of_material Mean SD SEM N adult Real Life 12.50 7.07 1.44 24 adult Traditional 67.50 6.49 1.38 22 adult Google 116.50 8.23 1.55 28 peer Real Life 40.50 9.38 1.66 32 peer Traditional 90.50 7.07 1.44 24 peer Google 144.50 8.23 1.55 28