Kathy stood on the middle rung of a ladder. she climbed up 44 rungs, moved down 33 rungs, and then climbed up 99 rungs. then she climbed up the remaining 33 rungs to the top of the ladder. how many rungs are there in the whole ladder?

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?