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A farmer wants to determine ifthere is a difference in the mean yields between two vanetjes of com (variety A and variety B). In order to compare the two varieties, he prepares a twoacre plot on each of his seven ditferent elds. On each eld he plants variety A on a one-acre plot and variety B on the one acre plot right next to it. Which acre plot gets which variety is determined at random. At harvest time, he measures the yield (in bushels) on each of the acre plots. VarietyA 148.2 144.6 149.7 140.5 154.6 147.1 151.4 Variety B 141.5 141.0 144.0 141.2 153.0 141.7 146.8 Assuming that the conditions for inference are met. what statistical test should be used to determine if there is a signicant difference between mean yields of corn? 0 A matchedepairs retest for mean 0 A twosample ttest for means 0 A chisquare test of independence 0 An Flest