Figure 9.2 represents the market for used cameras. Suppose buyers are willing to pay $125 for a plum (high-quality) used camera and $25 for a lemon (low-quality) used camera. If buyers believe that 50% of used cameras in the market are lemons (low quality), how many lemons (low quality) will be supplied by sellers?
A. 10
B. 15
C. 20
D. 25
Answer: D
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As real GDP ________, aggregate planned expenditure ________
A) decreases; remains the same, because it is independent from real GDP B) increases; remains the same, because the increase in some components is precisely offset by the decrease in others C) increases; decreases D) decreases; increases E) increases; increases
If an airline company has several empty seats on a flight and the full price of an air ticket is $500 and the marginal cost per passenger is $100, then it will be profitable for the airline to
a. charge a stand-by passenger no less than the full fare of $500. b. charge a stand-by passenger less than $100. c. charge a stand-by passenger more than $500. d. charge a stand-by passenger more than $100. e. fill the seats at the last minute for any price.
The accompanying table gives the outcomes and probability distribution of the number of times a student checks her e-mail daily:
Probability of Checking E-Mail Outcome (number of e- mail checks) 0 1 2 3 4 5 6 Probability distribution 0.05 0.15 0.30 0.25 0.15 0.08 0.02 Sketch the probability distribution. Next, calculate the c.d.f. for the above table. What is the probability of her checking her e-mail between 1 and 3 times a day? Of checking it more than 3 times a day? What will be an ideal response?
An increase in government expenditures is an example of expansionary fiscal policy.
Answer the following statement true (T) or false (F)