1. In a second grade class containing 15 girls and 11 boys, 2 students are selected at random to give out the math papers. What is the probability that both are girls?

2.The following distribution is not a probability distribution because

X

2

1

0

1

2

P(X)

0.16

0.20

-0.12

0.45

0.31

A a probability is negative.

B values of the variable are negative.

C the probability values do not add to 1.

D. The probability values are not discrete.