La otra tarde vi en un parking 39 vehículos, entre coches y motos, a los que les conté un total de 126 ruedas. ¿cuántos vehículos de cada clase había en el parking?

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3