Effects of Sugared Cereal on Preschool Children's Activity: Two-Factor ANOVA - Prof. Patri, Assignments of Psychology

Download Effects of Sugared Cereal on Preschool Children's Activity: Two-Factor ANOVA - Prof. Patri and more Assignments Psychology in PDF only on Docsity! Name ___________________________________________ Mini-HW 12 Two-Factor ANOVA A graduate student wanted to explore the effects of sugared cereal on the activity level of preschool children. She has 2 factors: Gender (A) & Cereal Type (B). She had a classroom of 12 children; 6 girls and 6 boys. Three of the girls were given Cheerios (i.e. low sugar cereal) and 3 were given Trix. Three boys also had Cheeerios, 3 had Trix. The student then measured their activity level. (Interpret any difference in means as a significant one. That is, you need not compute any F values!) They scored the following: 3 girls on Cheerios: 3, 3, 6 3 girls on Trix: 5, 1, 6 3 boys on Cheerios: 10, 9, 11 3 boys on Trix: 20, 18, 22 1. Draw the 2 x 2 matrix of cells with the means. 2. Which is the appropriate null hypothesis for the Main Effect of Factor B? a. Mgirls = Mboys b. μgirls = μboys c. Mcheerios=MTrix d. μcheerios=μTrix 3. Evaluate the main effects. What can you conclude? a. There are no significant main effects. One cannot reject either null hypothesis. b. There are no significant main effects. One can reject both null hypotheses. c. There are two significant main effects. One would reject both null hypotheses. d. There is one significant main effect. One can reject only one null hypothesis. 4. Evaluate the interaction. What can you conclude? a. There is no interaction. Boys do not become differentially active in the presence of sugared cereal. b. There is a significant interaction. Boys do not become differentially active in the presence of sugared cereal. c. There is a significant interaction. Boys become differentially active in the presence of sugared cereal. d. There is no interaction. Boys become differentially active in the presence of sugared cereal.