7. Mrs. Golden pulls names from the jar to determine who will be the class leader. There are 13 girls and 9 boys in the class. What is the probability that a boy will be the class leader?

9:22

Step-by-step explanation:

9 is the boys 13 is the girls

22 is the total

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0