ECONOMICS
1 intro to economics

# Bthe statement is positive and can be tested cthe

• Test Prep
• natiaboyd
• 14

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b.The statement is positive and can be tested. c.The statement is positive and can be tested. PTS: 1 3. ANS: a.Yes, you faced a tradeoff. The tradeoff was between a higher test score and an evening with your friends at the movies. b.The opportunity cost of going to the movies is the fall in your grade. That is the 20 points forgone from choosing to see the movie rather than study. PTS: 1 4. ANS: Choosing at the margin means choosing to do a little more or a little less of some activity. Three common examples students encounter are: a) When a student faces a chemistry and an economics final exam in one day, the student must determine whether spending the last hour studying a little more chemistry or a little more economics will yield a better contribution (marginal benefit) to his or her overall GPA. b) A college student buying a computer must decide whether the marginal benefit of adding 1 GB of additional memory is worth the marginal cost of the additional memory. c) A student football fan with a choice of a cheap seat in the student bleachers located at the far end of the playing field or a more expensive seat located on the 30 yard line must determine whether the marginal benefit of watching the game from a better seat is worth the marginal cost of the higher ticket price.

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PTS: 1 5. ANS: The \$6.7 billion spent on Olympic facilities is definitely an opportunity cost of the Sochi Olympics. The \$16.7 billion spent upgrading the Sochi area infrastructure and the \$27.6 billion spent on hotels and facilities are an opportunity cost of the Sochi Olympics if the funds would not have spent otherwise. However, if there were already plans underway to upgrade the Sochi area infrastructure then the cost is not an opportunity cost of the Sochi Olympics because the cost would have been paid even if Sochi did not host the Olympics. Similarly, if there were already plans underway to build hotels and facilities in Sochi then the cost is not an opportunity cost of the Sochi Olympics because the cost would have been paid even if Sochi did not host the Olympics. PTS: 1
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• Spring '17

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