Suppose that the population average of (monthly) wage of young employees in Tasmania in the previous year before this survey was conducted was $900. a. Conduct a hypothesis test that the population average wage of young employees in Tasmania during the year of survey remains the same as in the previous year. [10 marks] b. Construct a 95% confidence estimate for the population average wage, and comment whether the population average wage in the year of survey remains the same as in the previous year. [10 marks]