Nobody can be dogmatic about the precise nature of this relative impact - it clearly differs between economies depending on the importance of international trade, and almost certainly varies depending on the stage of the economic cycle.
On the basis of research to date we believe it is reasonable to suggest that a 1 percent increase in 90 day interest rates has roughly the same effect on inflation, in the medium-term, as a 2 percent increase in the (trade-weighted) exchange rate.