Refer to the model for monthly differences in the exchange rate shown in Figure 9. Calculate the

Question:

Refer to the model for monthly differences in the shown in Figure 9. Calculate the mean and variance of the number of times, in two years, that the absolute value of a one-month difference exceeds (a) .048 (b) .072
Exchange Rate
The value of one currency for the purpose of conversion to another. Exchange Rate means on any day, for purposes of determining the Dollar Equivalent of any currency other than Dollars, the rate at which such currency may be exchanged into Dollars...