Plzzz alicia and her friends got out for burgers and and sodas. she is feeling very generous and wants to pay for everyone. the register rings up the meals and coupons below. alicia $3.83 diego $7.95 carmen $4.32 zac $6.54 the twins $14.89 coupon $7.50 the register gives the total cost as 38.55. estimate the total amount of the bill, by rounding to the nearest dollar, use your answer to determine if the total 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?