Unemployment In class we defined the unemployment rate (u), which is computed as the ratio of the number of unemployed workers in the economy (U) to the size of the labor force (F): u = U/F. This is referred to as the "U-3" measure of labor underutilization and is the headline measure reported in the news. However, the Bureau of Labor Statistics (BLS) also reports broader measures of labor underutilization that are similar to the unemployment rate but account for other types of non-employment---for example, the U-4, U-5 and U-6 underutilization rates. Using the Bureau of Labor Statistics website (www.bls.gov), answer the following THREE questions (Q5-Q7): Let D denote the number of "discouraged workers" in the economy. How is the U-4 rate defined? a. U/(F+D) b. (U+D)/F c. U/F d. (U+D)/(F+D)