Stats
posted by Mandy .
If there are only two possible outcomes to an experiment then...
A.) the two corresponding probabilities must each be.50.
B.) the two corresponding probabilities could be any numbers between 0 and 1, but must add up to 1.
C.) the two corresponding probabilities could each be any numbers between 0 and 1.
D.) the two corresponding probabilities must be 0 and 1.

The sum of all probabilities is always 1, B.