Labor economists have recently begun focusing on a new area referred to as personnel economics. describe what personnel economics might study. personnel economics examines all of the following issues except

a. the effects of labor unions on wages.
b. how firms set worker benefits.
c. policies related to pensions.
d. the link between differences among jobs and differences in the way workers are paid.
e. how firms promote workers.

Exercise 2-12 cost behavior; high-low method [lo2-3, lo2-4] speedy parcel service operates a fleet of delivery trucks in a large metropolitan area. a careful study by the company’s cost analyst has determined that if a truck is driven 120,000 miles during a year, the average operating cost is 11.6 cents per mile. if a truck is driven only 80,000 miles during a year, the average operating cost increases to 13.6 cents per mile. required: 1.& 2. using the high-low method, estimate the variable and fixed cost elements of the annual cost of truck operation. (round the "variable cost per mile" to 3 decimal places.)