Ricardo's recipe for 4 loaves of bread requires 2/3 cup of olive oil. he only wants to make 1 loaf. ricardo makes a model to find out how much oil he needs to use. he folds a piece of paper into three parts and shades two parts. then he folds the paper into four parts and shades 1/4 of the shaded part. ricardo decides he needs 1/4 cup of olive oil. is he right? explain

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?