In city a the temperature rises 9° from 8 a. m. to 9 a. m. then the temperature drops 8 degrees from 9 a. m. to 10 a. m. in city b the temperature drops 5° from 8 a. m. to 9 a. m. then the temperature drops for degrees from 9 a. m. to 10 a. m

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?

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64

C. using a standard deck of 52 cards, the probability of selecting a 4 of diamonds or a 4 of hearts is an example of a mutually exclusive event. true of false