Priors

Expectation · Commuting

Waiting for the shuttle bus

Shuttle buses to the train station arrive completely at random (a Poisson process), on average one every 10 minutes. You show up at the stop at a random moment. What is your expected wait, in minutes?

Answer with an expected value. First lock in a gut guess with an 80% range, then solve it properly, then watch a simulation settle on the truth.

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