Writing a system of equations from tables
try it
complete the statements about the system of linear
equations represented by the tables.
the equation representing the left table is
6.1
the equation representing the right table is
-4.5
2.1
the solution to the system of equations is
-3
-1.9
3
-1.5
-1.5
-5.9

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?