For the model of the EUR/GBP exchange rate discussed in Exercise 27, what would the cutoff rates

Question:

For the model of the EUR/GBP discussed in Exercise 27, what would the cutoff rates be that would separate the
a) Highest 16% of EUR/GBP rates?
b) Lowest 50%?
c) Middle 95%?
d) Lowest 2.5%?
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...