Probability
... • Mathematically, a probability is a number between 0 and 1 that measures the likelihood that some event will occur. – An event with probability zero cannot occur. – An event with probability 1 is certain to occur. ...
... • Mathematically, a probability is a number between 0 and 1 that measures the likelihood that some event will occur. – An event with probability zero cannot occur. – An event with probability 1 is certain to occur. ...
Guided Reading page 341 – 344
... b. Write the event “the student received a grade of 3 or 4” in symbols in terms of the random variable X. What is the probability of the event? Say in words what it means. ...
... b. Write the event “the student received a grade of 3 or 4” in symbols in terms of the random variable X. What is the probability of the event? Say in words what it means. ...
Class Notes Number 3
... • IF P (w) IS CLOSE TO ZERO, THEN THE OUTCOME w IS UNLIKELY TO OCCUR. • IF P (w) IS CLOSE TO 1, THE OUTCOME w IS VERY LIKELY TO OCCUR. • A PROBABILITY DISTRIBUTION MUST ASSIGN A PROBABILITY BETWEEN 0 AND 1 TO EACH OUTCOME. • THE SUM OF THE PROBABILITY OF ALL OUTCOMES MUST BE EXACTLY 1. ...
... • IF P (w) IS CLOSE TO ZERO, THEN THE OUTCOME w IS UNLIKELY TO OCCUR. • IF P (w) IS CLOSE TO 1, THE OUTCOME w IS VERY LIKELY TO OCCUR. • A PROBABILITY DISTRIBUTION MUST ASSIGN A PROBABILITY BETWEEN 0 AND 1 TO EACH OUTCOME. • THE SUM OF THE PROBABILITY OF ALL OUTCOMES MUST BE EXACTLY 1. ...
6.3 Assignment of Probabilities
... The inclusion-exclusion principle states that the probability of the union of two events is the sum of the probabilities of the events minus the probability of their intersection. If the two events are mutually exclusive, the probability of the union is just the sum of the probabilities of the even ...
... The inclusion-exclusion principle states that the probability of the union of two events is the sum of the probabilities of the events minus the probability of their intersection. If the two events are mutually exclusive, the probability of the union is just the sum of the probabilities of the even ...
