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re: Mike and Mike posed an interesting question

Posted on 3/12/15 at 7:38 am to
Posted by slackster
Houston
Member since Mar 2009
85469 posts
Posted on 3/12/15 at 7:38 am to
quote:

I would think that is pretty accurate


That assumes you have a 2.5% chance of making one shot. I think that is a bit high, especially considering the pressure of the situation.

People are treating the statistics of this as if each shot is dependent on the last shot, but it isn't. If you flip heads 9 straight times, the chance of heads on the 10th flip is still 50/50. If you miss the first 15 shots, your chances of making one in the last 5 certainly do not go UP.
Posted by OceanMan
Member since Mar 2010
20066 posts
Posted on 3/12/15 at 8:15 am to
quote:

That assumes you have a 2.5% chance of making one shot. I think that is a bit high, especially considering the pressure of the situation.


I think it means you have a 2.5% chance to make 1/20, which I would say incorporates the other varaibles, as the amount of shots is known. Or said differently, you will achieve the goal for every 2 times you accept; you have a 50% chance of achieving the goal vs going to jail.

I dont think that is high by any means, and illustrates that this is an even wager.

And yes, each shot IS dependent on the last, this isnt a coin flip. The average guy that walks out to do this will likely be pretty tired by shot 20. The expected result is driven by historical performance, rather than available outcomes...free throw shooters, for instance, achieve their overall FT% from all of their shots, but you will certainly see variations in their splits (ie their percentage after a make/miss on first attempt). This just shows that expected results are dependent on external circumstances.
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