The Florida Department of Labor and Employment Security reported the state mean annual wage was $26,133 (The Naples Daily News, Feb. 13, 1999). A hypothesis test of wages by county can be conducted to see whether the mean annual wage for a particular county diers from the state mean. A sample of 550 individuals from Collier County showed a sample mean annual wage of $25,457. Assuming that = $7600, is there enough evidence to conclude that mean annual wage of people from this county is signicantly dierent than the state mean?