Question
You are studying Interest Rate Parity, a finance theory that the interest rate differential between foreign and domestic countries is equal to the return on
You are studying "Interest Rate Parity", a finance theory that the interest rate differential between foreign and domestic countries is equal to the return on the currency exchange rate. To test the theory, you run the following regression model for the currency exchange rate data between 1979 and 2015. The number of observations is 431.
fxrett = 0.53 + 0.73irdif ft-1, R^2 = 0.77
(0.06) (0.02)
Where fxret is the monthly return of GBPUSD exchange and irdif f is the interest rate differential between UK and US. Values in parentheses are standard errors.
(a) What is the interpretation of the estimated coefficient values 0.53 and 0.73?
(b) Test the hypothesis that the slope coefficient is equal to 1 (use a two-sided test with a 5% significance level). Clearly state all steps of the testing procedure, all relevant information you use and how you reach your conclusion.
(c) Based on the outcome of your hypothesis test in part (b), explain if the Interest Rate Parity theory is supported by the empirical evidence?
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