Your state decides to mandate a shortened 30-hour workweek for all companies with 20 or more employees. Economics researchers studying the impacts of a shortened work week on unemployment rates found several key variables, including whether employees held multiple jobs, hourly wages, and level of employment across the economy. Assuming that the year before the enactment of the 30-hour workweek law unemployment in your state was 12%. In a random sample of 500 employable residents of the state, 53 were unemployed. Conduct a test of hypothesis to determine if your state's unemployment rate dropped after the shortened workweek law was passed. Test using= 0.05

A.z= -.90B.z= -.88C.z= .96D.z= -.96