Ineed to answering a and b the alaskan glaciers are melting at a rate of 24 cubic miles per year. at this rate, how many years will it take for 420 cubic miles of the glacier to melt? a) set up an equation that models this question. b) how many years will it take for 420 cubic miles of the glacier to melt?

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?