Question: As of January 2010, the “average” salary for a Police Patrol Officer in the United States, regardless of department size, years of experience, education or any other factor, was $49,158. A prospective job seeker researched some information on 144 officers for the Columbus Police Department and found that the “average” salary for them was $50,520 with a standard deviation of $11,822. Construct and conduct a hypothesis test at the 0.02 level of significance to determine if his findings are enough to determine that “average” salary of an officer in Columbus is different than the rest of the county?