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: 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. A)Since F = 39.05 F_α=0.10 = 1.88,reject the null hypothesis.This means that based on these sample data we can conclude that blocking is effective. B)Since F = 39.05 F_α=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. C)Since F = 40.05 F_α=0.10 = 1.88,reject the null hypothesis.This means that based on these sample data we can conclude that blocking is effective. D)Since F = 40.05 F_α=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

Question

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: 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. A)Since F = 39.05 > F_α=0.10 = 1.88,reject the null hypothesis.This means that based on these sample data we can conclude that blocking is effective. B)Since F = 39.05 > F_α=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. C)Since F = 40.05 > F_α=0.10 = 1.88,reject the null hypothesis.This means that based on these sample data we can conclude that blocking is effective. D)Since F = 40.05 > F_α=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

Quizplus · Accepted Answer

The null hypothesis here is that there is no difference in textbook prices between on-campus bookstores, off-campus bookstores, and Internet bookstores. The alternative hypothesis is that there is a difference. Since the calculated F value (39.05) is greater than the F-statistic required to reject the null hypothesis at the alpha = 0.10 level of significance (1.88), we reject the null hypothesis. This means that we can conclude, based on these sample data, that there is a difference in textbook prices between the three types of bookstores, and that blocking for differences in textbooks was effective in controlling for differences in price between different disciplines.

A Study Was Conducted to Determine If Differences in New