ASAP PLZ The list below shows the ages of the first 20 customers at a new computer game store. 6,7,9,10,14,15,16,17,20,26,29,31,34 ,35,38,40,51,59,67 decide what class
intervals to use and then create a frequency table for the ages.

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?