Bookworms increased its prices by 5%, and then increased by 3%. books galore increased its prices by 3%, and the increased them by 5%.
which shop's prices increased by the greater percentage?
a. bookworms
b. books galore
c. both the same
d. cannot tell.
justify your choice.

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?