Which product is better to buy small 18 ounces for $3.25 or large 32 ounces for 5.50
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The events are mutually exclusive, because your primary method can't be both a driving a car or taking a bus.
Since they are exclusive, the probability of the "or" clause is the sum of the probabilities:
Since a person primarily takes a bus with probability 0.32, the opposite happens with probability
