Janis mows the lawn in 1 hour and types a paper in 1 hour. Kristen mows the lawn in 2 hours and types a paper in 1 hour. Which of the following statements is true?
a. Kristen has an absolute advantage in typing and a comparative advantage in mowing.
b. Janis has an absolute advantage in both activities and a comparative advantage in typing.
c. Janis has an absolute advantage in both activities and a comparative advantage in mowing.
d. The opportunity cost of mowing the lawn is greater for Kristen than it is for Janis.
e. Neither Janis nor Kristen would gain from specialization.
Question 2
If Jason can wash a car in 20 minutes and wash a dog in 10 minutes, and Megan can wash a car in 15 minutes and wash a dog in 15 minutes, which of the following statements is true?
a. The opportunity cost of washing a car is greater for Megan.
b. The opportunity cost of washing a car is one dog bath for Jason.
c. Megan could wash two cars in the time it takes to wash a dog.
d. Jason has both a comparative and an absolute advantage in washing a dog.
e. The opportunity cost of washing a dog is greater for Jason.
Meta-analysis of 18 studies shows that aerobic exercise causes better performance in older adults on
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