Problem: A human factors psychologist studied three computer keyboard designs. Three samples of individuals were given material to type on a particular keyboard, and the number of errors committed by each participant was recorded. The data are as follows: 5 9 1 6 2 5 Group 1 (Keyboard A) X X Group 2 (Keyboard B) X2 X Group 3 (Keyboard C) X3 X3 1 7 7 6 10 5 1 3 7 2 4 6 = 3 = X2 2 = X3 = X3= mean = mean = mean3 = S = n = 6 S2= n2=6 S3= n3 = 6 1. Identify the IV and the DV. What are the levels of the IV? 2. Write the problem and the statistical/research hypotheses (null and alternate) 3. Fill out the table. 4. Compute SSw, SSB, and SST 5. Create the Summary Table for One-Way ANOVA Sources of Variation Between Within SS DF MS FOBT FCRIT Total 6. Put all the needed values on the table. 7. Test the null hypothesis at .05 level of significance. 8. Write your conclusion in APA format. 9. Determine the effect size. 10. If results are significant, perform the Post-Hoc test. 11. Write conclusions.