Un aparta-estudio está siendo remodelado, de manera que la habitación y el baño tendrán pisos nuevos.
El maestro de obra conversa con el dueño y toma las
medidas que se muestra en la figura de la derecha.
¿Cuántos de baldosas necesita para poner los pisos
nuevos?

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?