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Use the following information to answer questions (11)-(13). According to the website www.costofwedding.com, the
average cost of catering a wedding (with an open bar) is $100 per person. Recently, in a random sample of 40
weddings in the U. S. it was found that the average catering cost was $110, with a standard deviation of $12. On the
basis of this, a 95% confidence interval for the mean catering cost for a wedding is $106 to $114.
-Verify that the conditions for a valid confidence interval are met.
Purchasing Power Parity
A theory which states that exchange rates between currencies are in equilibrium when their purchasing power is the same in each of the two countries.
Exchange Rate
The price of one country's currency in terms of another currency, determining how much foreign currency can be exchanged for a unit of domestic currency.
Spot Trade
A transaction for the immediate delivery of a financial instrument or commodity.
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