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

Feb2313 09:25 AM
micromass

1 
27,626 
A random variable X follows a certain distribution. Now say I multiply the random variable X by a constant a. Does...

Aug1011 03:18 AM
chiro

5 
9,720 
Hi.
Can somebody recommend a good book (advanced level) dealing with applications of cross correlation functions?...

Aug1711 06:17 PM
Squatchmichae

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...

Aug811 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...

Aug411 03:55 PM
AINtKpkC3BBNn

0 
835 
Hi everyone, very excited to be here and this my first post.
I have a question about data fitting by using least...

Aug511 03:52 PM
mathman

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...

Aug811 10:30 AM
Stephen Tashi

1 
1,318 
I am asked to write a report on "How Many Clusters? Which Clustering Method? Answers Via ModelBased Cluster Analysis"...

Aug411 01:14 AM
poo_of_poo

0 
1,183 
Hello,
Would anyone beable to recommend a good, easy to read article which outlines MMSE and its derivation. ...

Aug511 07:11 AM
EmmaSaunders1

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...

Aug1111 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)
...

Aug1311 07:11 PM
Rasalhague

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...

Aug811 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...

Aug1011 07:10 PM
bpet

6 
3,547 
This is a question posed by NASA astrobiologist Chris McKay (who wants to put life together back from its pieces), who...

Aug511 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...

Aug611 10:48 AM
FourierFaux

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...

Aug1111 01:45 AM
jamison89

3 
1,781 
I believe that Fibonacci primes are infinite. Currently there is no proof that there is an infinite number of...

Aug911 09:14 AM
fibonacci235

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)
...

Aug1311 07:01 PM
micromass

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...

Aug911 01:55 PM
math_grl

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...

Aug1011 02:13 AM
Job

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...

Aug1011 06:23 PM
Hurkyl

3 
900 
Hi everyone,
I have a feeling the following property is true but I can't find it stated in any textbook/online...

Aug1111 12:14 PM
CantorSet

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...

Aug1011 11:01 PM
disregardthat

2 
1,479 
I'm working through Koosis: Statistics: A Self Teaching Guide, 4th edition. In Chapter 5, Koosis describes how to use...

Aug1111 09:25 PM
Rasalhague

2 
2,088 
How to prove that 'every totally ordered set X contains a cofinal wellordered subset'?
I'm reading Halmos's Navie...

Aug1111 09:13 AM
prophetlmn

1 
1,606 
Hello,
I would like to ask a question that is related to the inductive hypothesis with Asymptotic notation. ...

Aug1411 02:39 PM
Noor01

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...

Aug1311 08:48 PM
Saladsamurai

2 
2,303 
Well, just as I thought I'd got the hang of this...
Koosis: Statistics: A SelfTeaching Guide, 4th ed., §§...

Aug1411 12:43 PM
Rasalhague

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...

Aug1711 04:19 AM
chiro

16 
2,376 
 Haim Permuter: Mathematical methods in communication: Lecture 1 (PDF notes).
What is the domain of X, and what is...

Aug1311 12:41 PM
Rasalhague

4 
1,192 
Given a number representing information entropy in some base, is there a welldefined way to convert this to the...

Aug1211 03:40 PM
Rasalhague

1 
2,572 
Hi,
I was trying to understand coproduct and product as defined in category theory from the website
...

Aug1411 10:47 AM
micromass

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...

Aug1411 01:58 PM
Sumanta

0 
895 
What's the difference? How are empirical and theoretical probability defined in general? If some people use the terms...

Aug1411 01:59 PM
Rasalhague

0 
2,822 
Consider an ARCH(1) model:
Xt = σtZt, where Zt~ i.i.d. N(0,1)
σt2 = w0 + w1 Xt12
Find (i) E(Xt)
and (ii) the...

Aug1711 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...

Aug1711 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 selftaught...

Aug1711 02:07 PM
claytondaley

7 
1,165 
Hi everybody, I was wondering this:
"What is the probability, given all the information (including scientific...

Aug1811 09:35 PM
SteveL27

2 
1,377 
I'm not a mathematician, but I want to understand how a mathematician would view this issue.
I'm working primarily...

Aug1811 09:03 AM
bpet

1 
1,025 
I've tried to understand Johansen test, but I don't understand it.

Aug1811 10:46 AM
Tosh5457

0 
826 
Hi,
Just wanted to ask a question regarding existence and uniqueness of solutions to SDEs. Say you have shown...

Aug1811 09:50 AM
yip

0 
961 