DEAL or NO DEAL (TV Game Show) How Decide?

[rufus]

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What is the correct way to decide whether to accept the bankers offer?
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Is this correct?

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It's unclear what the banker's behavior is, or whithat the actual value of the money is. Without those two pieces of information, it's not too easy to determine the correct strategy.

Generally speaking, it's going to be a poor choice to take the deal when it's lower than the geometric mean of the values, and a good choice to take the deal when it's higher than the arithmetic mean, but you don't see contestants with calulators.