Which is the principal value of \arctan\left(2.6\right)arctan(2.6)\ arctan, left parenthesis, 2, point, 6, right parenthesis

How do you convert 1.27 to a percentage

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.

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?