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Set Theory, Logic, Probability, Statistics

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Jan16-12 Greg Bernhardt
Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions...
Feb23-13 09:25 AM
micromass
1 31,865
This might be embarrasingly easy or impossible; I've been a computer programmer for too long since my statistics...
Jul5-11 02:40 AM
rabbyad
3 5,751
Let us assume a dynamic system which has vector with 'n' components (which are non-negative integers from 1->n) at...
Jun29-11 09:31 PM
Stephen Tashi
1 1,244
Hi guys, I'm working on a research project that looks at the amount of cosmic rays coming out of a particular...
Jul1-11 09:37 AM
Stephen Tashi
1 1,062
I have a state transition probability matrix and a state probability vector & respectively. Now, I want to...
Jul1-11 09:23 PM
lemontree45
6 2,160
Let's say you have a random sample of 5 values that are drawn from an exponential distribution with a mean of 8. ...
Jul4-11 07:14 PM
bpet
6 8,085
Hi all, I want to compute mean square error (MSE) for a problem but I'm not sure if I'm doing it right. Suppose...
Jun26-11 10:18 PM
kasraa
2 2,394
In proving :|x|=0\Longrightarrow x=0,the following indirect proof is offered: Let |x|= 0 and suppose x\neq 0...
Jul5-11 04:05 PM
daveb
14 2,006
Hello, While doing a research, I obtained the following PDF: ...
Jun28-11 01:56 PM
Pyrrhus
16 4,185
I'm studying for the probability actuarial exam and I came across a problem involving transformations of random...
Jul3-11 09:39 PM
bpet
1 2,006
Hi all, I had a question about calculating mutual information, a topic to which I am very new. Consider the...
Jun27-11 11:42 PM
Stephen Tashi
3 4,665
I'd like to know how to prove (or show that it is reasonable) that the probability that a random vector (X, Y) assumes...
Jul4-11 07:40 PM
ndrue
12 1,843
is there a way to explicitly express the chi-squared inverse function? when programming it, I have had to resort to...
Jun29-11 06:53 PM
onanox
12 5,279
This text patch is taken from wikipedia article http://en.wikipedia.org/wiki/Julia_set "For f(z) = z2 the Julia set...
Jun27-11 11:50 AM
gursimran
2 1,164
Can anybody help with this. How to calculate after how many spins the sector of 6 numbers will win, with probability...
Jun27-11 08:50 AM
ninko
4 1,451
I'm going through the set theory material in the appendix of Knapp's Basic Algebra. I want to make sure that I...
Jul5-11 04:43 PM
TopCat
6 2,439
Hello all. I have set up a model using the Kalman filter to estimate automobile prices. I'm having difficulty in...
Jun28-11 04:23 AM
mtal
0 1,753
It may make on sense but I want to understand probability intuitively....!!!....can any one explain.....?how should i...
Jun28-11 01:31 PM
quantizedzeus
2 838
Hello everyone, I have a (noob!) question about Markov Random Field potential function. So, I am looking at some...
Jun28-11 05:18 PM
pamparana
0 726
Definition: Let X1,X2,... be a sequence of random variables defined on a sample space S. We say that Xn converges to a...
Jul2-11 12:28 AM
kingwinner
6 1,839
hey guys, i am really confused on something.here is the thing: i have; i=x+(x^2-y)^(1/2) and here x is...
Jul3-11 01:54 PM
musademirtas
4 1,439
Hi everyone, I was wondering if anyone could help me better understand dependent probabilities. I am interested in...
Jun29-11 11:41 PM
Stephen Tashi
3 2,429
Hello experts, Thanks to discussions with Stephen Tashi for getting me this far. See the problem statement in...
Jul1-11 08:36 AM
tim8691
4 1,487
Hi all, The question is: Given that X follows a geometric distribution, prove that ...
Jul2-11 09:20 PM
Ant64
2 1,516
If p(x) is a probability distribution on the real number line, the "wrapped" distribution around the unit circle is:...
Jul3-11 09:27 PM
bpet
1 1,539
Hi everyone! Here's my problem of the day: Let's take a box containing 3 identical (but distinguishable)...
Jul3-11 02:34 PM
teddd
1 840
Today my grandfather told me a story, which he insists is true and which I believe he believes is true, which seems to...
Jul8-11 01:37 PM
Megaritz
6 2,179
My goal here is to at least approximately calculate the probability density function (PDF) given the moment generating...
Jul7-11 07:28 PM
bpet
6 5,790
The following problem came up in my work. You have a tube, open at the top. Raindrops fall into the mouth of the...
Jul9-11 08:17 AM
pmsrw3
9 1,917
I have a discrete set of data. I'd like to visualize it probabilistically. Unfortunately, I focused in Num Methods in...
Jul6-11 11:14 AM
pmsrw3
2 1,527
Hi, Why there is a half factor in the definition of the correlation of complex random variables, like: ...
Jul6-11 01:14 PM
S_David
4 2,747
Dear all, let's say I want to know the elasticity constant of a spring (k), so I measure several times different...
Jul8-11 01:10 PM
atat1tata
8 2,404
Hi there! I'm trying to prove that every Dedekind cut A has an additive inverse -A such that A + (-A)=0*. We've...
Jul7-11 08:51 AM
micromass
1 1,625
I have 6 years of data which has both a 3-month and a 12-month seasonality, it exhibits a trend and is very noisy. ...
Jul7-11 12:17 AM
Oxymoron
0 695
Hi, everybody Let n_1 ~ Poisson ( \lambda_1 ) and n_2 ~ Poisson (\lambda_2). Now define n=n_1-n_2 . We...
Jul8-11 03:47 AM
sabbagh80
5 1,935
Hello, I have a question regarding the likelihood ratio order of two distributions: Is there a requirement that...
Jul7-11 05:16 PM
hadron23
0 849
Theorem: If "θ hat" is an unbiased estimator for θ AND Var(θ hat)->0 as n->∞, then it is a consistent estimator of θ....
Jul8-11 04:28 PM
kingwinner
4 2,230
Linear Spaces Norms and inner products Holder’s inequality Minkowski’s inequality Normed linear spaces...
Jul8-11 10:00 AM
micromass
1 1,086
The ABC manufacturing company purchases a certain part from two suppliers (A supplier & B supplier). The parts...
Jul9-11 12:23 PM
pmsrw3
8 1,568
Hello y'all, If I have n data points (xi, yi) each with error bars in both x and y (xi_err, yi_err), should I use...
Jul9-11 04:52 PM
pmsrw3
6 2,858
I believe that it is correct, and it concisely represents a concept I have never understood. It seems obvious to me...
Jul9-11 07:40 PM
pmsrw3
3 1,176

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