6. Describe the sample space for the indicated experiment.
2 boys and 2 girls are in Room X, and 1 boy and 3 girls in Room Y. Specify the sample space for the experiment in which a room is selected and then a person.
Let X denote the event Room X is selected, Y denote the event Room Y is selected.
B1, B2 denote the event a boy is selected and G1, G2 denote the event a girl is selected from room X.
B3 denotes the event a boy is selected and G3, G4, G5 denote the event a girl is selected from Room Y.
The required sample space is:
S = {XB1 , XB2 , XG1 , XG2 , YB3 , YG3 , YG4 , YG5 }