Given:
Number of girls x P(x)
0 0.125
1 0.375
2 0.375
3 0.125
What is the random variable?
The random variable is x. x represents the number of girls in three births
What are its possible values?
The possible values of x are 0,1,2, and 3.
Are its values numerical?
Yes, the values are numerical because 0,1,2, and 3 are numbers.