Phil is buying bags of grass seed. ● One brand, Quickgrow, says it covers 1/20 of an acre with 1/2 of a cup of seeds.
● The second brand, Greengrass, says that it covers 1/15 of an acre with 1/5 of a cup of seeds.
Which brand of seeds would cover the greatest area per cup?
The answer choices are
green grass
Neither
Both
Quickgrow

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?