10. 1. The probabilities can be taken from a normal table, in which the critical z- values are 2.00 or 3.00 and we are including the probabilities in both tails. The probabilities that the exchange rate will be at least 2 or 3 standard deviations away from the mean are P(| X-H| 220)=0.0456 P(| X-H 230) =0.0026 2. With Chebyshev's inequality, the maximum probability of the exchange rate being at least k standard deviations from the mean is P(| X - p | > ko)