An accounting office has 6 incoming telephone lines. The probability distribution of the number of busy lines, X, is as follows: 0 1 2 3 4 5 6 Total P(X = 20) 0.02 0.15 0.17 0.37 0.16 0.1 0.03 1 1. Use the random variable notation to express symbolically each of the following: An event in which the number of busy lines is exactly 5. The probability of an event in which the number of busy lines is exactly 4 is equal to 0.16 8 The probability of an event in which the number of busy lines is exactly 3. 2. Use the above probability distribution table to find the following: a. PO 1) = (Round the answer to 2 decimals) Question Help: Video Written Example The probability distribution for the number of students in Statistics classes offered at a small college is given but one value is missing. Fill in the missing value, then answer the questions that follow. PIX) X 22 23 24 0.16 0.2 0.23 0.23 25 26 0.18 Find the mean number of students in a Statistics class at the college: 25.07 Find the standard deviation of the number of students in a Statistics class at the college: 1.3361 Submit