La promoción de 5to grado de secundaria "Jóvenes caminando hacia el éxito" han estado realizando actividades para su viaje y fiesta de promoción, logrando hasta la fecha juntar la suma de S/. 24 000. Por ello, el comité de padres de familia convocó una reunión general para decidir dónde depositar el dinero, presentando dos opciones de ahorro: Opción 1: Depósito por 2 años que paga el 10% trimestral en interés simple. Opción 2: Depósito por 2 años en una cuenta que paga el 18% de semestral compuesto anual. Ayuda a los padres de familia de la promoción a elegir la mejor opción.

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.

Let b(t) be the number of unread books remaining on alex's bookshelf after reading consistently for t months. so, b(9) = . this means that , the .