A survey was done of 250 households to find out if they watch cable television, internet television, or both. Of the 250 households, 165 watched cable television, 123 watched internet television, and 15 watched neither,
If a household was selected randomly, what would be the probability that they watched both cable and internet
television? Round your answer to the nearest whole percent.

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?