An economist with the Liquor, Hospitality and Miscellaneous Workers' Union collected data on the weekly salaries of workers in the hospitality industry in Cairns and Townsville. The union believed that the weekly salaries of employees in Cairns were higher and they were mounting a case for the equalisation of salaries between the two cities. The researcher took samples of size 32 and 25 in Cairns and Townsville, respectively, and found that the average and standard deviation of the weekly salaries were $592.75 and $38.41 respectively in Townsville, and $608.17 and $32.90 in Cairns. Use Cairns minus Townsville.