C For The As... C Complete... C QUESTION.. C Given The... C QUESTION. C For This A. Module 9. X1 0 1 2 p(x) 0.4 0.2 0.4 H = 1, 62 = 0.8 (a) Determine the pmf of To = X1 + X2. to 0 1 2 3 4 p (t ) .16 .08 X .16 X .08 X .16 (b) Calculate HT = 2 How does it relate to , the population mean? HT = 2 . H 4 (c) Calculate T - 2 . 2 = 5.577 X How does it relate to of, the population variance? 2 = 2 . 62 (d) Let X3 and X be the number of lights at which a stop is required when driving to and from work on a second day assumed independent of the first day. With T. = the sum of all four X/'s, what now are the values of E(T.) and V(T)? E(T) = 4 V(T ) = 2.4 X (e) Referring back to (d), what are the values of P(T. = 8) and P(T. 2 7) [Hint: Don't even think of listing all possible outcomes!] P(T = 8) = 1.6 X P (T 2 7) = 1.7 X