8 6
O
Which function is graphed?
-8 -6
4
- 20
2
4
6
8
4
-6
-8
O A. y-{:2,481
+21
|-x+2, 21
SP+2X21
B. y -
1-x+2, x< 1
O C. y.
M+2.xs1
1-x+ 2. *> 1
y = .
P>1
1-*+2, 21
Please look at the pic if you don’t understand by this

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?