A) If 10 out of 1495 people have a certain genetic defect, what is the probability of selecting three people from this group,without replacement, and all three have the genetic defect?

B) In a ten day period, the probability of a certain number of outbreaks of a contagious viral infection is represented in the table below.

Calculate P(x 2)

x P(x)

0 0.30

1 0.40

2 0.27

3 0.02

4 0.01