Awebsite offers a coupon such that each customer has a

15

%

15%15, percent chance of getting the coupon each day they visit the site. aya visits the website for

6

66 consecutive days.

what is the probability that at aya will be offered a coupon on at least one of the days she visits the website?

round your answer to the nearest hundredth

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?