Independent-measures ANOVA Example A major candy maker wants to determine if college students have a preference for a certain type of candy. She hired a marketing psychologist who randomly chooses 12 people from a college statistics class who have tried three types of candy (4 different students for each type of candy are sampled). Test if there are differences in candy ratings based on type of candy using an independent-measures ANOVA, alpha = .05. a. What are the null and alternative hypotheses? b. Fill out the source table below. c. What is the critical value? d. Reject or fail to reject the null? What is the study conclusion (describe group differences if you reject the null)? Source SS df MS Between treatments Within treatments Total Kiss Starbursts Rolo 4 2 W SST=EX2-G2/N SSB=ET2 - G2/N SSw=ESS within each condition dfx=N-1 dfr=k-1 dfw=N-k or Edf each condition