An advertising company is interested in determining if there is a difference in the mean sales that will be generated for a soft drink company based on which shelf the soft drinks are located.There are four possible shelf levels.The ad company wants to control for store size.The following data reflect the sales for one week at each combination of shelf level and store size. Based on the experimental design,the calculated F-test statistic value for testing whether blocking on store size was effective is approximately 16.3.

Question

An advertising company is interested in determining if there is a difference in the mean sales that will be generated for a soft drink company based on which shelf the soft drinks are located.There are four possible shelf levels.The ad company wants to control for store size.The following data reflect the sales for one week at each combination of shelf level and store size.  Based on the experimental design,the calculated F-test statistic value for testing whether blocking on store size was effective is approximately 16.3.

Quizplus · Accepted Answer

The calculated F-test statistic value for testing whether blocking on store size was effective is given and it is greater than the critical F-value. Therefore, there is evidence to suggest that blocking on store size was effective in controlling for store size and reducing the variability in the data, making the comparison of sales across shelf levels more reliable. Hence, the answer is true.

An Advertising Company Is Interested in Determining If There Is