Consider the following information. 
The test statistic to test the null hypothesis equals
Definitions:
Supply and Demand Analysis
An economic model that explains how prices for goods and services are determined in a market economy through the interaction of supply and demand.
Foreign Exchange
The system by which one currency is exchanged for another, enabling international transactions and trade.
Exchange Rate
The value of one currency for the purpose of conversion to another, indicating how much one currency is worth in terms of another.
Supply and Demand
Economic model that determines the price of a commodity in a market, based on the availability of the commodity (supply) and the desire for it (demand).
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