ur bits are transmitted over a digital communications channel. Each bit is either distorted or received without distortion. Let Ai denote the event that the i th bit is distorted, i = 1, 2, 3, 4. (a) Describe the sample space for this experiment. (b) Are the Ai’s mutually exclusive? Describe the outcomes in each of the following events: (c) A1 (d) A1′ (e) A1 ∩ A2 ∩ A3 ∩ A4 (f) (A1 ∩ A2) ∪ (A3 ∩ A4)