In testing a certain kind of missile, target accuracy is measured by the average distance X (from the target) at which the missile explodes. The distance X is measured in miles and the sampling distribution of X is given by: K X 0 10 50 100 5 P(X) 12 3 12 Calculate the variance of this sampling distribution [2.8571 a) 0 60.0 [2.8571 b) 0 472.2 [2.85714 c) O 2600.0 [2.857142 Q d) O 1416.7 [2 857142 Q (2.8571429 e) 376 Q [2 8571429 Review Later Q 2