Afish tank has 9 goldfish, 7 tetras, 4 snails, and 3 platies. what is the ratio of tetras to platies?

20 only answer if 100% sure most high school-aged teens are very active. a. true b. false

The measure of angle 0 is 600 degrees

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?