La academia de futbol de 6° grado está organizando un convivio, para tal efecto necesitan comprar la merienda que van a consumir; los organizadores acuden a un negocio especialista en este tipo de eventos y se les sugiere los siguientes 3 paquetes: paquete hamburguesa con un costo de 45 pesos, paquete pizza con un costo de 50 pesos y paquete chilidog con un costo de 40 pesos, en total la academia ordeno 50 paquetes por los cuales pago 2350 pesos, si se sabe que el número de paquetes de hamburguesa que compro es igual al número de paquetes de chilidog, determina cuántos paquetes de cada tipo se ordenaron.

The weibull distribution is widely used in statistical problems relating to aging of solid insulating materials subjected to aging and stress. use this distribution as a model for time (in hours) to failure of solid insulating specimens subjected to ac voltage. the values of the parameters depend on the voltage and temperature; suppose α = 2.5 and β = 190. (a) what is the probability that a specimen's lifetime is at most 250? less than 250? more than 300? (round your answers to four decimal places.) at most 250 less than 250 more than 300 (b) what is the probability that a specimen's lifetime is between 100 and 250? (round your answer to four decimal places.) (c) what value is such that exactly 50% of all specimens have lifetimes exceeding that value? (round your answer to three decimal places.) hr