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Suppose used car salesmen tell the truth 2/5 of the time, and 1/3 of the trees in a forest are oak. If 4 used car salesmen say that a certain tree in the forest is oak, what is the probability that the tree is indeed oak. I have not been able to get the correct answer.

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This solution explains one probability problem in step-by-step format, which clearly delineates how to derive at the correct answer.

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Suppose used car salesmen tell the truth 2/5 of the time, and 1/3 of
the trees in a forest are oak. If 4 used car salesmen say that a
certain tree in the forest is oak, what is ...

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