Jim and Fred are the only two cashiers employed at a retail store. Each of them works the same 40 hours per week and each can check out 30 customers per hour by manually entering the price of each product purchased into the cash register. The store owner replaces the old cash registers with new ones that automatically scan product prices into the register. With the new cash registers, Jim and Fred can each check out 60 customers per hour. Their average labor productivity as a team before the new cash registers were introduced was ________ customers per hour and ________ customers per hour after the new machines were installed.
A. 30; 120
B. 30; 60
C. 1,200; 2,400
D. 60; 120
Answer: B
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If the rate of return is higher than the cost of borrowing the:
A. investor will lose money on net after paying back the loan. B. investor will make money on net after paying back the loan. C. saver will make less money on net than the borrower. D. borrower will make more money on net than the saver.
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Which of the following statements is true?
A. If standard errors are too large or too small, they should be reported in scientific notation. B. If coefficients are too large or too small, they should be reported in scientific notation. C. While reporting figures, the number of digits after decimals should be limited. D. The list of references used should be reported in the appendix.