1) Un grupo formado por 7 personas que dese .. formar una comisión integrada por un presidente, un secretario y un vocal. ¿De cuántas maneras puede formarse dicha comisión? \( \begin{array}{llll}\text { A) } 120 & \text { B) } 168 & \text { C) } 210 & \text { D) } 720\end{array} \)

The number of births in a hospital follows a Poisson distribution with an average number of 1 birth per hour. What is the standard deviation associated with the number of births within a whole day (i.e. over 24 hours)?

61. Se lanza un dado cargado, con forma de dodecaedro ( 12 caras), cuyas caras están numeradas consecutivamente desde el 1 al 12 , en que la probabilidad de caer en un número par es el triple que la de caer en un impar. ¿Cuál es la probabilidad de obtener al menos un 6 ?

The number of births in a hospital follows a Poisson distribution with an average number of 1 birth per hour. What is the probability that there will be at least one birth within the next 2 hours? \( \frac{0.8647}{0.6321} \) 0.1353

In a town, the number of electric power failures occurs randomly with an average of one failure every 4 months. What is the variance associated with the number of failures over six consecutive months?

The number of births in a hospital follows a Poisson distribution with an average number of 1 birth per hour. What is the probability that there will be no birth within the next 2 hours? 1.00 0.135 0.368 0.250