1. What assumptions need to be satisfied in order to perform ANOVA? Select all that apply a. The observations from each group (or treatment or population) should adhere to approximately normal...

Extracted text: 1. What assumptions need to be satisfied in order to perform ANOVA? Select all that apply a. The observations from each group (or treatment or population) should adhere to approximately normal distributions. b. The variances (or standard deviations) of the groups (or treatments or populations) should be the same. c. The samples must be simple random samples, and independent of each other d. The sample sizes for the groups must be exactly the same, and also happy.