The Movie-goers
Alfred and Betty are a couple and like to go to the movies. Each week, there is a certain probability that each of them wants to go, depending on how they're feeling, which is the same for both of them. If you ask Alfred wether he wants to go, and he says yes, what is the likelihood that Betty wants to go too? Express your answer as a decimal rounded to 2 places.
The answer is 0.67.
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