statistics
posted by Ariana .
The students in your class with three children in their families are asked to state the number of boys in the family. What are the possible numbers? If X is the number of boys minus the number of girls in each of these families, state all the possible values of X. Make a table of probability distribution.
Step by step please?
Thanks in advance :)

Number of children = 3
Possible number of boys = {0,1,2,3}
X=number of boys  number of girls
={3,1,1,3}
P(X)= probability of event X.
b g X P(X)
0 3 3 1/8
1 2 1 3/8
2 1 1 3/8
3 0 3 1/8