Re: Simple Probability Question

From	Yuri Kreaton <invlaid@invalid.com>
Newsgroups	sci.physics
Subject	Re: Simple Probability Question
Date	2016-11-08 12:13 -0600
Organization	Aioe.org NNTP Server
Message-ID	<nvt4ku$1svc$1@gioia.aioe.org> (permalink)
References	<nvnbfc$6ai$1@dont-email.me> <nvq5dh$3qe$3@gioia.aioe.org> <nvqskf$1m4$1@gioia.aioe.org> <fp97fd-okm.ln1@mail.specsol.com> <58210c4d$0$1782$c3e8da3$5d8fb80f@news.astraweb.com>

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On 11/7/2016 5:20 PM, benj wrote:
> On 11/7/2016 4:54 PM, jimp@specsol.spam.sux.com wrote:
>> Yuri Kreaton <invlaid@invalid.com> wrote:
>>> On 11/7/2016 9:08 AM, Odd Bodkin wrote:
>>>> On 11/6/2016 7:34 AM, Bob wrote:
>>>>> Each coins gets and experiences the exact same input.
>>>>> 100 % identical.
>>>>
>>>> Can't do that. Violates laws of physics.
>>>>
>>>
>>> yup.  they cannot weigh the same, if real coins, there is at least a 5%
>>> variance.
>>>
>>>
>>> I weighed 50 aspirins once, 325mg, however each one did not weigh 325mg,
>>> they were all off, but within +-30mg.
>>>

>>> ALSO, if it is a coin, it has been stamped on both sides, with different
>>> impressions, therefore the center of gravity is NOT exactly in the
>>> middle of the coin, creating a bias.
>>
>> You people need to decide whether you're talking about real coins out
>> of pocket or 'special' experimental, controlled coins made for the
>> purpose of the experiment.
>>
>> FYI the front to back resistration on real coin is pretty consistant,
>> so any bias should be the same for a given lot of real coins.
>>
> I have heard that American coins have a very slight bias toward heads
> but it takes an enormous number of flips for it to show up.
>
> This paper says coins then to come up with a bias toward how they were
> when flipped. http://statweb.stanford.edu/~susan/papers/headswithJ.pdf
>

interesting paper, but if the tossing machine was perfect, it would flip 
each coin identically each time, and land the same way all the time....

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Simple Probability Question Bob <rgsros@notme.invalid> - 2016-11-06 08:34 -0500
  Re: Simple Probability Question Poutnik <poutnik4nntp@gmail.com> - 2016-11-06 14:50 +0100
    Re: Simple Probability Question Poutnik <poutnik4nntp@gmail.com> - 2016-11-06 15:06 +0100
    Re: Simple Probability Question Wally W. <ww84wa@aim.com> - 2016-11-06 10:37 -0500
      Re: Simple Probability Question Poutnik <poutnik4nntp@gmail.com> - 2016-11-06 16:47 +0100
  Re: Simple Probability Question Helmut Wabnig <hwabnig@.- --- -.dotat> - 2016-11-06 17:44 +0100
  Re: Simple Probability Question Yuri Kreaton <invlaid@invalid.com> - 2016-11-06 12:50 -0600
    Re: Simple Probability Question Poutnik <poutnik4nntp@gmail.com> - 2016-11-06 20:04 +0100
      Re: Simple Probability Question Yuri Kreaton <invlaid@invalid.com> - 2016-11-06 14:51 -0600
        Re: Simple Probability Question Poutnik <poutnik4nntp@gmail.com> - 2016-11-06 22:24 +0100
  Re: Simple Probability Question Double-A <double-a3@hush.com> - 2016-11-06 13:24 -0800
    Re: Simple Probability Question "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-11-07 13:08 -0800
  Re: Simple Probability Question Odd Bodkin <bodkinodd@gmail.com> - 2016-11-07 09:08 -0600
    Re: Simple Probability Question jimp@specsol.spam.sux.com - 2016-11-07 18:42 +0000
    Re: Simple Probability Question Yuri Kreaton <invlaid@invalid.com> - 2016-11-07 15:44 -0600
      Re: Simple Probability Question jimp@specsol.spam.sux.com - 2016-11-07 21:54 +0000
        Re: Simple Probability Question benj <benj@nobody.net> - 2016-11-07 18:20 -0500
          Re: Simple Probability Question Yuri Kreaton <invlaid@invalid.com> - 2016-11-08 12:13 -0600

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