Jacob has several wood dowel remnants. He needs several pieces that are at least 2 1 feet long to use for a project. Which of 343
the lengths, 2 16 feet, 2.3 feet, 2.25 feet, 2 8 feet, and 2.2 feet, are
usable?

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?