How Likely Is That? Shelly Berman shelly@mathforum.org
Some things might happen or might not happen. For example, on any given day in Philadelphia, it might rain, sleet or snow, or it might not do any of these.
Some things are just as likely to happen as they are to not happen. For example, when I flip a normal coin, it is just as likely to land heads up as tails up.
We would say that the probability of flipping a coin and getting a head is (1/2). Where would you place that probability on the scale:

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