Anna's college tuition payment is automatically withdrawn from a separate checking account used only

to pay tuition. At the beginning of the year, the balance

in this account was $13,287.48. After withdrawals each

month for a year, the balance is $1,449.84. How much is

Anna's college tuition payment each month? Estimate to

show that your answer is reasonable.

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?