Suppose an economist collects the following data between May and December of a given year: gasoline prices rose sharply, consumer incomes remained constant, consumers purchased more fuel efficient vehicles than in the previous year, the size of the population did not change, sales of gasoline decreased by 15 percent. Which of the following theories could be tested with this information? a. When consumer incomes rise, gasoline purchases rise.
b. No economic theory could be tested with this information.
c. When the population increases, purchases of fuel efficient vehicles increase.
d. When the price of gasoline rises, gasoline purchases fall.

You own a nonunion company with 93 nonexempt employees. all of these employ- ees pack books into boxes for shipment to customers throughout the united states. because of wide differences in performance, you have decided to try performance appraisal, something never done before. until now, you have given every worker the same size increase. now you want to measure performance and reward the best performers with bigger increases. without any further information, which of the five types of appraisal formats do you think would be most appropriate? justify your answer. do you anticipate any complaints, or other comments, from employees after you implement your new system?