statistics
posted by georgina .
Which of the following defines the probability of an event A, or P(A)?
The probability of A equals 0.50.
The probability of A equals the number of possible outcomes in the sample space divided by the number of outcomes favorable to A.
The probability of A equals the number of outcomes favorable to A divided by the number of possible outcomes in the sample space.
The probability of A equals the number of outcomes favorable to A.

The probability of A equals the number of outcomes favorable to A divided by the number of possible outcomes in the sample space.
The first choice gives a specific probability, but does not define it. 
the probability of A equals the the number of favorable outcome to A divided by the number of possible out comes in the sample space