A restaurant chainis interested in increasing theaverage 'check size per person', in other words the average amount each dinner spends. The regional manager for region A implements a program to increase check size by selling more deserts. After a month a marketing analyst collects a sample of checks from region A, and from region B, which did not implement the program. A statistical test reveals that the average check size in regionA is higher, and thedifference is statistically significant. The analyst claims this proves the desert program is a success and recommends it be rolled out nationally. Comment on the test and the analyst's recommendation