
Please post any and all homework or other textbookstyle problems in one of the Homework & Coursework Questions...

Feb2313 09:25 AM
micromass

1 
32,746 
(I hope this question is in the proper place.)
I am confused about what effect the universal quantifier has on a...

Aug1213 12:35 PM
verty

4 
633 
Hi all,
I have an all time doubt here. We know that if r.v z = x + y where x and y are 2 random sequences...

Aug1213 09:59 AM
Stephen Tashi

7 
564 
A set x is wellordered by < if every subset of x has a least element. Here < is assumed a linear ordering, meaning...

Aug1113 02:10 PM
verty

1 
438 
http://i.imgur.com/lhSpLdN.png
"90 students are split randomly into 3 groups of 30. What is the chance for 3...

Aug913 07:09 PM
D H

6 
869 
Hi,
I'm comparing different measurement methods. I listed and derived an equation for each error component per...

Aug913 01:51 PM
Stephen Tashi

5 
848 
I'm casually working on determining the probability of a team in a given sport (let's say football) reaching at least...

Aug913 09:49 AM
Stephen Tashi

1 
685 
Hi. I'm studying calculus in high school right now, and I became really interested in how calculus could be developed...

Aug813 06:35 PM
Dods

133 
11,735 
Hi all,
I have a dataset of 3 continuous variables and 1 binary (YES/NO) variable, I am trying to establish a model...

Aug813 04:54 PM
Stephen Tashi

1 
405 
Suppose you flip a fair coin 10,000 time how can you characterize the distribution of the occurrence of head?
From...

Aug813 04:45 PM
Stephen Tashi

4 
631 
and (~q or ~s) ] > (~p or ~r)
I know all basic theories in Logic and I want to know the correct way/correct steps...

Aug813 01:06 PM
verty

2 
482 
Hey guys,
I am currently working on a personal project, and I've run into a dilemma.
I need to determine the...

Aug813 12:34 PM
mfb

6 
715 
The problem:
Let \mu_{n} = \frac{1}{n} for n \in \mathbb{N}. Let X_{n} \; \mathtt{\sim} \; \textrm{ Poisson}\left(...

Aug813 12:19 PM
LoadedAnvils

0 
364 
Hello:
I've three circles as seen in the image.
http://www.picpaste.com/thumbs/QuantifyPwdfQxLB.1375867631.png...

Aug713 05:22 AM
D H

4 
538 
I had a problem that said "I throw nine balls randomly in five containers. What's the probability any container will...

Aug613 05:18 PM
cdux

3 
518 
http://arxiv.org/pdf/1306.5973v1.pdf
http://arxiv.org/abs/1306.5973
A detailed discussion and comparison of (δ,ε)...

Aug613 03:47 PM
mathman

0 
390 
P(B/A) = P(A/B).P(B) / P(A)
Later we expand P(A) as P(A/B).P(B) + P(A/B).P(B) ... B is complement of B
I don't...

Aug613 12:11 PM
Avichal

4 
1,138 
Hi Everyone,
I am a newbie in probability theory and following is my question:
...

Aug513 06:35 PM
Simon Bridge

3 
393 
Can I have a nontrivial example of where \forall x P(x) \rightarrow \exists x P(x) fails?

Aug513 03:15 PM
Dragonfall

4 
521 
Hi to all,
I have the following problem: I want to characterize two lots of detectors in order to retrieve their...

Aug513 02:06 PM
mfb

1 
372 
Hi,
I understand the transformations of variables concept, getting the Jacobian and so on, but I am having...

Aug513 07:31 AM
libragirl79

0 
300 
So there is a proof that the sum of any two even numbers is an even number.
2k + 2l = 2(k +l)
We have written...

Aug413 07:09 PM
micromass

4 
605 
For example, if we had an arbitrary event that could either yield the result a or b, we might naively assign a...

Aug413 04:23 PM
Stephen Tashi

2 
488 
My question is what is the the meaning of the T(as a power) in the following line?
...

Aug413 05:19 AM
verty

1 
850 
Hi, friends! Since this is my first post, I want to present myself as an Italian who is trying to teach himself...

Aug313 01:38 AM
Stephen Tashi

1 
576 
1) For the normal distribution it seems that the integral of the propability density function from \mu\sigma to...

Aug213 03:53 PM
statdad

9 
1,294 
We have for two random variables X and Y (one sum runs over j and one over k):
E(X+Y) = ƩƩ(xj+yk)P(X=xk,Y=yk)
=...

Aug213 03:37 PM
statdad

2 
415 
Hi math gurus .
I have probability modeling question.
There are 5 coins A, B, C, D,E,F . Each coin has 2 outcomes...

Aug113 08:12 PM
phya2020a

5 
821 
The book states that ##P(xy,t)## represents the probability density that the potential has a value x at time t,...

Aug113 10:42 AM
fluidistic

2 
1,736 
Axioms are: 
1) P(E) >= 0
2) P(S) = 1
3) P(E1 U E2 U ...) = P(E1) + P(E2) + .... if all are mutually exclusive
...

Aug113 08:24 AM
Avichal

7 
672 
Ok so maybe this will take some work to wrap your heads around. Maybe not. I sure know that I have had some real...

Aug113 04:37 AM
mfb

6 
631 
When I was very young, I read a book from the 60's about classical mathematics. I was far too young to understand...

Jul3113 12:17 PM
verty

2 
675 
(a) Is it true (and provably so) that
for every real number r > 0 there exists a natural number n such that there...

Jul3113 11:14 AM
nomadreid

0 
404 
What is a good test for hypothesis testing of a complex deterministic model?
What I'm doing:
I have a complex...

Jul3013 08:10 PM
chiro

19 
1,216 
I have always wondered:
Is the product rule and addition rule for that matter axioms of the probability theory or...

Jul3013 08:07 PM
chiro

2 
501 
Hi all, i got a set of negative values ranging from 0.0001 to 0.3. How do i effectively make them easier to compare...

Jul3013 05:13 AM
chiro

1 
441 
Hi all a quick question regarding ARMA models.
If a time series has an upward trend (or any trend), and it then...

Jul2913 04:22 PM
Darth Frodo

0 
478 
I imagine myself flipping a coin repeatedly and recording the outcomes. With only the WLLN being true, I expect to...

Jul2813 11:36 PM
Stephen Tashi

1 
542 
Hello,
I have a simple question regarding changing variables in a conditional distribution.
I have two...

Jul2813 12:39 PM
ivalmian

5 
543 
Hi everyone,
Suppose I have two samples that can be described by an observable. Call it x. x can take on any...

Jul2813 12:04 PM
mfb

7 
583 
Hi,
I would like to know, how do I evaluate the quality of correlation?
Specifically, I have a set of N...

Jul2613 08:55 PM
chiro

1 
711 