An accounting office has 6 incoming telephone lines. The probability distribution of the number of busy lines, X, is as follows: 2; 0 1 2 3 4 5 6 Total P(X = ) 0.05 0.15 0.17 0.34 0.15 0.14 1 = 0 1. Use the random variable notation to express symbolically each of the following: An event in which the number of busy lines is exactly 4. The probability of an event in which the number of busy lines is exactly 4 is equal to 0.15. The probability of an event in which the number of busy lines is exactly 0. 2. Use the above probability distribution table to find the following: a. P(1