Assignment due online on March 30, 2020 PSYC 350 10am Section: Homework Assignment #6 1. A researcher is interested in the effects of age on alcohol consumption. He determines the weekly alcohol consumption of 4 separate groups of subjects: 18- year-olds, 22-year-olds, 26-year-olds, and 30-year olds. His data are reproduced below. Each score represents weekly alcohol consumption (number of drinks) for each of his subjects. Group 1: Age 18 3 1 6 5 7 Group 2: Age 22 2 7 15 9 4 Group 3: Age 26 10 7 6 5 4 Group 4: Age 30 4 3 7 5 4 (a) Using the information provided below, perform a one-way between-subjects ANOVA on the data and fill in the ANOVA summary table. With = 0.05, what do you conclude about the effect of age on alcohol consumption? Be sure to include a discussion of the critical value in your answer. X32 Group 1: X12 Group 2: X22 Group 3: Group 4: Age 18 Age 22 Age 26 Age 30 3 9 2 9 10 100 4 1 1 7 49 7 49 3 6 36 15 225 6 36 7 5 25 9 81 5 25 5 7 49 4 16 4 16 4 X 1 = 22 X12 X 2 = 37 X22 X 3 = 32 X32 = X 3 = 23 n1 = 5 n2 = 5 n3 = 5 n4 = 5 = = 226 120 375 Source Between Within Total Sum of Squares 31.4 154.8 186.2 X42 25 9 4 36 16 X32 = 115 Overall X = 114 X2 = 836 N = 20 k=4 df Mean Square F 3 16 19 10.46 9.67 1.08 df1= dfbetween = 3 df2= dfwithin = 16 Fcrit = 3.24 Fobt =1.08 1.08