May I have detailed steps to this problem please?

2E. A digital communications system consists of a transmitter and a receiver. Dur- ing each short transmission interval the transmitter sends a signal which is to interpreted as a zero, or it sends a different signal which is to be interpreted as a one. At the end of each interval, the receiver makes its best guess at what was transmitted. Consider the following events: T\" = {Transmitter sends }, Rn = {Receiver concluded that a [l was sent} T1 = {Transmitter sends 1}, R1 = {Receiver concluded that a 1 was sent} assume that Puff?\" | Ta} = 1.199, Pl IT1) = H.913, and P{T1}= n.5, Find: {a} the probabilitg,r of a transmission error given R1 {b} the overall probability of a transmission error Armani": {a} UHF} {b} Mlle