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Set Theory, Logic, Probability, Statistics

- Fundamentals: Set theory, logic and proofs. Probability and statistics
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Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions...
Feb23-13 09:25 AM
1 27,626
A random variable X follows a certain distribution. Now say I multiply the random variable X by a constant a. Does...
Aug10-11 03:18 AM
5 9,720
Hi. Can somebody recommend a good book (advanced level) dealing with applications of cross correlation functions?...
Aug17-11 06:17 PM
2 2,054
Hi, I have sent this question a couple of days ago, but it seems that its latex form had problem. So, I decide to...
Aug8-11 10:47 AM
Stephen Tashi
15 2,322
I made up some stats because I don't have a source of such data, and I'm looking to find out whether they're plausible...
Aug4-11 03:55 PM
0 835
Hi everyone, very excited to be here and this my first post. I have a question about data fitting by using least...
Aug5-11 03:52 PM
1 1,397
Hey, Not sure if this is the right section to post this but ... I have a graph for which im supposed to fit two...
Aug8-11 10:30 AM
Stephen Tashi
1 1,318
I am asked to write a report on "How Many Clusters? Which Clustering Method? Answers Via Model-Based Cluster Analysis"...
Aug4-11 01:14 AM
0 1,183
Hello, Would anyone be-able to recommend a good, easy to read article which outlines MMSE and its derivation. ...
Aug5-11 07:11 AM
2 1,707
I have a list of chemicals, their assay test results, and a binomial column of whether or not the assay test result...
Aug11-11 12:02 PM
Stephen Tashi
3 2,602
(here I use "A" for the universal quantifier, "E" for the existential quantifier, and "e" to indicate elementhood) ...
Aug13-11 07:11 PM
2 1,640
I've been told that their exists no perfect mathematical method of obtaining a line of best fit from a population of...
Aug8-11 04:09 PM
SW VandeCarr
17 3,868
I am trying to reproduce the results of a colleague and I am having difficulty understanding how to find a PDF of a...
Aug10-11 07:10 PM
6 3,547
This is a question posed by NASA astrobiologist Chris McKay (who wants to put life together back from its pieces), who...
Aug5-11 04:04 PM
Stephen Tashi
1 1,917
1. There are 5 red chips and 3 blue chips in a bowl. The red chips are numbered 1,2,3,4,5 resp and the blue chips are...
Aug6-11 10:48 AM
3 1,592
I read online, that if you have a deck of 60 cards, and you must draw seven, the probability of getting a specific...
Aug11-11 01:45 AM
3 1,781
I believe that Fibonacci primes are infinite. Currently there is no proof that there is an infinite number of...
Aug9-11 09:14 AM
2 1,219
Given the following : 1)\forall x\forall y\forall z G(F(F(x,y),z),F(x,F(y,z))) 2)\forall xG(F(x,c),x) ...
Aug13-11 07:01 PM
7 1,405
Let f(x) be the mean of five numbers: 4, 5, 7, 9 and x. Let g(x) be the median of the same numbers. For how many...
Aug9-11 01:55 PM
1 911
I don't know much about this P vs NP debate at all but what happens if they assume P = NP or P=/=NP? What does it mean...
Aug10-11 02:13 AM
8 2,162
In the course of proving that \sqrt{3} is irrational, I had another question pop up. To prove that \sqrt{3} is...
Aug10-11 06:23 PM
3 900
Hi everyone, I have a feeling the following property is true but I can't find it stated in any textbook/online...
Aug11-11 12:14 PM
5 2,148
I'm not sure if this question has any sense. Either way, hopefully someone can help me see either the right question...
Aug10-11 11:01 PM
2 1,479
I'm working through Koosis: Statistics: A Self Teaching Guide, 4th edition. In Chapter 5, Koosis describes how to use...
Aug11-11 09:25 PM
2 2,088
How to prove that 'every totally ordered set X contains a cofinal well-ordered subset'? I'm reading Halmos's Navie...
Aug11-11 09:13 AM
1 1,606
Hello, I would like to ask a question that is related to the inductive hypothesis with Asymptotic notation. ...
Aug14-11 02:39 PM
0 1,361
Hi folks :smile: I have an experiment in which I take an image of a flame. I then run a software routine that...
Aug13-11 08:48 PM
2 2,303
Well, just as I thought I'd got the hang of this... Koosis: Statistics: A Self-Teaching Guide, 4th ed., ...
Aug14-11 12:43 PM
2 1,384
I've been trying to find the solution to the following problem but it's evaded me thus far. Take the classic one...
Aug17-11 04:19 AM
16 2,376
- Haim Permuter: Mathematical methods in communication: Lecture 1 (PDF notes). What is the domain of X, and what is...
Aug13-11 12:41 PM
4 1,192
Given a number representing information entropy in some base, is there a well-defined way to convert this to the...
Aug12-11 03:40 PM
1 2,572
Hi, I was trying to understand coproduct and product as defined in category theory from the website ...
Aug14-11 10:47 AM
1 1,376
Hi , This is not a hw problem as I have long passed out of college. I was trying to understand why or where would...
Aug14-11 01:58 PM
0 895
What's the difference? How are empirical and theoretical probability defined in general? If some people use the terms...
Aug14-11 01:59 PM
0 2,822
Consider an ARCH(1) model: Xt = σtZt, where Zt~ i.i.d. N(0,1) σt2 = w0 + w1 Xt-12 Find (i) E(Xt) and (ii) the...
Aug17-11 09:07 AM
Stephen Tashi
2 1,667
Koosis: Statistics..., 4th ed., p. 177: The given answer is yes. "You must be prepared to assumed the...
Aug17-11 07:00 PM
Stephen Tashi
3 2,224
Let me start by saying I'm an amateur insofar as I took one propositional logic course in college and have self-taught...
Aug17-11 02:07 PM
7 1,165
Hi everybody, I was wondering this: "What is the probability, given all the information (including scientific...
Aug18-11 09:35 PM
2 1,377
I'm not a mathematician, but I want to understand how a mathematician would view this issue. I'm working primarily...
Aug18-11 09:03 AM
1 1,025
I've tried to understand Johansen test, but I don't understand it.
Aug18-11 10:46 AM
0 826
Hi, Just wanted to ask a question regarding existence and uniqueness of solutions to SDEs. Say you have shown...
Aug18-11 09:50 AM
0 961

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