Figure 154 Alt Text for Figure 15

question 54

Multiple Choice

Figure 15.4 Alt text for Figure 15.4: In figure 15.4, a graph illustrates the quantity of pounds traded against the exchange rate.
Long description for Figure 15.4: The x-axis is labelled, quantity of pounds traded in millions per day.The y-axis is labelled, exchange rate, Canadian dollar against the pound.A straight line supply curve, S, slopes up from the middle left to the top right corner.2 straight line demand curves, D1 and D2, have 2 slightly different slopes.Both curves slope down from the top left corner to the bottom right corner.Curve D2 is plotted to the left of curve D1.The difference between the curves is indicated by a left pointing arrow.Curve S intersects curves D1 and D2 at points A (500, 3.00) and B (300, 2.00) .Point (300, 4.00) is plotted near the top of curve D1, and point (100, 4.00) is plotted near the top of curve D2.All points are connected to their corresponding values on the x and y-axes with dotted lines.
-Refer to Figure 15.4.The equilibrium exchange rate is at A, $3/pound.Suppose the British government pegs its currency at $4/pound.Speculators expect that the value of the pound will drop and this shifts the demand curve for pounds to D₂.After the shift,

• A)there is a shortage of pounds equal to 600 million.
• B)there is a surplus of pounds equal to 400 million.
• C)there is a shortage of pounds equal to 400 million.
• D)there is a surplus of pounds equal to 600 million.
• E)there is a shortage of pounds equal to 200 million.

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Definitions:

Upper-tail Area

The area under the probability density function of a continuous random variable to the right of a specified value, used in significance testing.

Pooled Proportion Estimate

A method used to estimate the combined proportion from two or more groups, assuming that the underlying proportions across groups are the same.

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect exists among the variables studied.

Population Proportions

The fraction or percentage of units in a population that have a particular attribute.