Estimate the median of the frequency distribution below? Class interval 1-5 6-10 11-15 16-20 21-25

Frequency 6 15 20 7 2

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

What is the slope of the line shown below?

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?