The avg. size of a farm in indiana county, penna, is 191 acres. the avg size of a farm in greene county is 199 acres. assume the data were obtained from 2 samples with standard deviations of 38 acres and 12 acres respectively, and the sample size of 8 and 10 respectively. cant it be concluded at alpha .05 that the average size of the famers in the 2 counties are different? assume the populations are normallyh distributed.