From: Bamaby Marsh To: "jeffrey E." <[email protected]> Subject: Re: Date: Sat, 30 Sep 2017 23:33:15 +0000 ps- invention of new kinds of statistical methods from big data a promising direction... we could talk to steve strogatz or duncan watts about this.... On Sat, Sep 30, 2017 at 7:25 PM, Bamaby Marsh < > wrote: nonsense! possible combinations say nothing about probability On Sat, Sep 30, 2017 at 6:23 PM, jeffrey E. <[email protected]> wrote: Combinations in the Sample Space In a two-child family, there are four and only four possible combinations of children. We will label boys B and girls G; in each case the first letter represents the oldest child: {BB, BG, GB, GO} When we know that one child is a boy, there cannot be two girls, so the sample space shrinks to: {BB, BG, GB} Two of the possibilities in this new sample space include girls: {BG, GB) and since there are two combinations out of three that include girls, the probability that the second child is a girl is 2/3. please note The information contained in this communication is confidential, may be attorney-client privileged, may constitute inside information, and is intended only for the use of the addressee. It is the property of JEE Unauthorized use, disclosure or copying of this communication or any part thereof is strictly prohibited and may be unlawful. If you have received this communication in error, please notify us immediately by return e-mail or by e-mail to [email protected], and destroy this communication and all copies thereof, including all attachments. copyright -all rights reserved EFTA00998703