The addition Rule: P(A or B) = P(A) + P(B) - P(A and B) A useful formula: P(A and B) = P(A)*P(B) when events A and B are independent.    If P(A or B) = 0.253, P(A) = 0.208 and P(A and B) = 0.509, what is P(B)?

Six balls numbered 1 to 6 are placed in a bag. Some of the balls are grey and some are white. The balls numbered 2 and 5 are grey. The balls numbered 1, 3, 4, and 6 are white. A ball will be selected from the bag at random. The 6 possible outcomes are listed below. Note that each outcome has the same probability. O DO Complete parts (a) through (c). Write the probabilities as fractions. 2 3 5 6 (a) Check the outcomes for each event below. Then, enter the probability of the event. Event A: The selected ball is white Event B: The selected ball has an even number on it Event A and B: The selected ball is white and has an even number on it Event A or B: The selected ball is white or has an even number on it 2 Outcomes 3 4 5 6 Probability

Evaluate: E20,(3n + 2) = [ ? ] n=1

Given P(A)=0.64,P(B)=0.79P(B|A)=0.92, what is P(A and B)?

Given P(A and B) = 0.23, P(A) = 0.46, what is P(B|A)?