7 In a completely randomized experimental design, 5 experimental units were used for each of the 4 levels of the factor (i.e., 4 treatments): Sourc Sum Degr Mean e of of ees Squar Variati Squ of e on ares Free dom F Betwe en Treat ments Error (Within Treat ments) Total 4302 8019 1232 1 1. Fill in the blanks in the following ANOVA table (There are 6 unknown numbers) 2. What is the null and alternative hypothesis for this ANOVA test? 3. Find the critical value of the F test at the 0.05 level of significance. 4. What is the conclusion? Please give reason. Question 8 A poll was taken this year asking college students if they considered themselves overweight. A similar poll was taken five years ago. Results are summarized below. Number Considered Sample Size Themselves Overweight Present Sample 300 150 Previous sample 275 121 1. Develop a 95% confidence interval estimate for the difference between the proportions of students who considered themselves overweight in the two samples 2. Is there conclusive evidence that one of the proportions is significantly different than the other? Explain using the results of part a. Do not perform any test