A study was conducted to determine if differences in new textbook prices exist between on-campus bookstores, off-campus bookstores, and Internet bookstores. To control for differences in textbook prices that might exist across disciplines, the study randomly selected 12 textbooks and recorded the price of each of the 12 books at each of the three retailers. You may assume normality and equal-variance assumptions have been met. The partially completed ANOVA table based on the study's findings is shown here: ANOVA Source of Variation SS df MS F Textbooks 16,624 Retailer 2.4 Error Total 17,477.6 Based on the study's findings, was it correct to block for differences in textbooks? Conduct the appropriate test at the alpha = 0.10 level of significance. Question 6 options: Since F = 40.05 > F=0.10 = 1.88, do not reject the null hypothesis. This means that based on these sample data we can conclude that blocking is not effective Since F = 39.05 > F=0.10 = 1.88, reject the null hypothesis. This means that based on these sample data we can conclude that blocking is effective. Since F = 39.05 > F=0.10 = 1.88, do not reject the null hypothesis. This means that based on these sample data we can conclude that blocking is not effective. Since F = 40.05 > F=0.10 = 1.88, reject the null hypothesis. This means that based on these sample data we can conclude that blocking is effective