Liam works at a zoo. He was looking at some data showing the masses of their 5 African elephants. The mean mass of the elephants was 3,800 kg, and the median mass was 3,600 kg . The smallest elephant, named Lola, weighed 2,700 kg

Lola then got very sick and lost weight until her mass reached 1,800 kg

How will Lola's mass decreasing affect the mean and median?

(A) Both the mean and median will decrease.

(B)The median will decrease, and the mean will stay the same.

(C)The mean will decrease, and the median will stay the same.

(D) The mean will decrease, and the median will increase.

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?