A sign on the gas pump at a local gas station encourages customers to have their oil checked with the claim that one out of every four cars needs to have oil added. If this is true, what is the probability of the following events? a. Zero out of the next four cars needs oil

b. One out for the next four cars needs oil

c. Two out of the next eight cars need oil

d. At least one out of the next four cars needs oil

e. Calculate the expected value and variance for n = 4 (four cars).

Answer the questions about keynesian theory, market economics, and government policy. keynes believed that there were "sticky" wages and that recessions are caused by increases in prices. decreases in supply. decreases in aggregate demand (ad). increases in unemployment. keynes believed the government should increase ad through increased government spending, but not tax cuts. control wages to increase employment because of sticky wages. increase employment through tax cuts only. increase as through tax cuts. increase ad through either increased government spending or tax cuts. intervene when individual markets fail by controlling prices and production.