financial derivatives

JR (Jarrow-Rudd) Model: You are constructing a 100-period binomial tree to represent a 91-day ( 0.2493-year) horizon. The risk-free rate for the given horizon is 4% in annualized continuously compounded terms. The underlying asset has a volatility of 38%. What are the parameters of the binomial tree if you use the JR solution? What is the risk-neutral probability in the constructed tree