If ‘C' denotes consumption expenditure, ‘I' denotes investment expenditure, ‘G' denotes government expenditure and ‘X' denotes net exports, then C + I + G + X equals:

The RAND Health Insurance experiment compared costs of HMOs with the costs of indemnity insurers. The study

a. confirmed the cost-saving potential of HMOs. b. Found no cost-saving by HMOs. c. the HMO had per capita costs that were 28% lower than the indemnity d. both a and c

The term Ceteris paribus means that:

a. everything is changing. b. all other things remain unchanged. c. no one knows which variables will change and which will remain constant. d. the basic principle of economics do not apply to the case being considered.