Which equation has no solution? 13y + 2 - 2y = 10y + 3 - y

5(2.2y + 3.4) = 5(y -2) + 6y

9(3y + 7) - 2 = 3(-9y +9)

32.1y + 3.1 + 2.4y - 8.2 = 34.5y - 5.1

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?