Normative economic statements refer to what should be

What are the four main ways in which the CPI is an upward-biased measure of the price level?

What will be an ideal response?

Which of the following statements is true?

a. Real GDP is a positive function of net exports. b. In the 1980s, the United States experienced a large trade surplus with Japan. c. Positive net exports mean that the domestic country imports more than it exports. d. Total U.S. net exports with Western Europe are zero. e. U.S. net exports are negative because of large trade deficits with other industrial nations.