4. Why do most analysts assume that the incidence of payroll taxes in the United States falls on workers rather than by employers? 5. Suppose the demand for apples is perfectly elastic and the government levies a tax t on the producers of apples. Assume that the supply of apples is neither perfectly elastic nor perfectly inelastic (it is upward sloping) 6. Governments typically provide disability insurance and unemployment insurance to worker but mandate that rms provide workers'compensation insurance to their workers instead of proving it. Why do you believe these differ? 7'. The Earned Income Tax Credit (EITC) is a govertnnent program for low and moderate income families with work- ing adults .It provides a tax credit to households that have earnings greater than 0 as a percentage of earnings up to a predetermined threshold. Is this program to help poor people social insurance? Why or why not