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 Sep 24 awarded Autobiographer Jul 10 awarded Supporter Oct 24 revised Self-study resources for basic probability? Added 'reference-request' tag Oct 14 awarded Teacher Oct 12 comment A Simple probability question You're surely welcome. Thank you, too. Oct 12 comment A Simple probability question Ah! Of course! I forgot about that. If you feel inclined, you may mark my answer as accepted, but you don't have to. Oct 12 awarded Commentator Oct 12 comment A Simple probability question You're welcome! Be sure to upvote the question since you found it helpful. Thanks! Oct 12 comment A Simple probability question @Kevinsb, that would work; that works out to about 31311329, so you could say that there is about a 1 in 31,311,329 chance of getting 15 questions right. Oct 11 revised annuities and interest Added 'finance' tag Oct 11 suggested approved edit on annuities and interest Oct 11 comment annuities and interest Please do not use "homework" as the only tag for a question. Oct 11 revised What is a blow-up? Added 'terminology' tag Oct 11 suggested approved edit on What is a blow-up? Oct 11 comment Relation between a random variable and its conditional expectation @lezebulon Can you clarify what you are representing with the letter $G$? Is $G$ an event (such as "$G$ is the event that $X > 0$")? Or, if $G$ is a random variable, by "for any $G$ possible", do you mean "for any selection of random variable $G$", or do you mean "allowing $G$ to be any of the values in its support" (thus distinguishing $E(X|G)$ from $E(X|G=g)$)? Oct 11 comment Relation between a random variable and its conditional expectation The conditional probability part doesn't always work. You can only split $P(X = 0 \textrm{ and } Y \neq 0)$ into $P(Y \neq 0 | X = 0) P(X = 0)$ if $P(X = 0) \neq 0$, because, by definition, $P(Y \neq 0 | X = 0) \equiv \frac{P(X = 0 \textrm{ and } Y = 0)}{P(X = 0)}$, so $P(X = 0) = 0$ results in division by zero, making $P(Y \neq 0 | X = 0)$ undefined. Oct 11 revised Explanation of term “closed under” in the definition of a sigma algebra? Made title more specific, added 'terminology' tag Oct 11 suggested approved edit on Explanation of term “closed under” in the definition of a sigma algebra? Oct 11 revised sigma algebra generated by random variable Include the close-brackets in the subscript on the last two MathJaX equations of the first paragraph, capitalize Borel Oct 11 revised Percentage of capitalization Replaced 'statistics' tag with seemingly more-relevant 'finance' tag