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

Feb2313 09:25 AM
micromass

1 
31,959 
Hi! I'm taking my first course in statistics and am hoping to get some intuition for this set of problems...
...

May3114 05:44 AM
FactChecker

3 
267 
for second group, why the set of numbers of ( 132, 152, 153, 154, 213, 214 , 215, 216, 231, .......) is not included?...

May3014 08:06 PM
Simon Bridge

7 
307 
Hi!
Suppose we have two variables Y and Z that depend on a third one, X. We are given P(x), P(yx) and P(zx). The...

May3014 07:28 PM
carllacan

4 
194 
Something that I haven’t given much thought to, until recently, is probability. This book I have been reading goes...

May2914 12:28 AM
switz5678

12 
636 
I have a byte array of length 16384 bytes obtained from random.org/bytes.
There is a random number sequence test...

May2614 11:00 PM
FactChecker

5 
314 
Hello I know this sounds stupid but my friend told me about something that made me think. So what he told me was that...

May2614 05:04 PM
Curly_810

3 
439 
Guys... I'm not a mathematician, so, sorry about my informality in math...
here is something crazy that I...

May2614 02:41 PM
maajdl

11 
565 
Hi. I notice that some values of X on the exponential distribution PDF have a value of around 1. I understand the...

May2614 07:13 AM
oneamp

6 
210 
What is the significance of the standard deviation (equal to the mean) in an exponential distribution? For example,...

May2614 07:13 AM
oneamp

6 
242 
I know that if you have 4 numbers eg. 1,23,4 then the total number fo diffferent combination is
4*3*2*1 = 24
what...

May2514 04:57 AM
paulfr

5 
322 
Can I get the link to the prime number theorem?

May2414 11:06 PM
micromass

1 
242 
Firm has 10 employees, 2 womens and 8 mens. The Management Board will randomly select 3 employees and reward them with...

May2314 02:12 PM
HallsofIvy

1 
237 
Hi all,
Suppose I have a kinetic model for a stochastic system of three states, as shown in the attachment. I solve...

May2214 11:23 PM
phyalan

3 
248 
I have some noisy data (xy coordinates) containing two distinct clusters of data. Each cluster is centred at an...

May2214 11:49 AM
jim mcnamara

23 
583 
According to Wikipedia, Baire space is defined as "the Cartesian product of countably infinite copies of the natural...

May2114 10:55 PM
PeterDonis

2 
300 
Q.1 what is probability in queuing system
Q.2 how many type of probability we can determine in queuing system
...

May2114 09:54 PM
vead

2 
211 
Suppose we have an observation y = c+ e where c is an unknown constant and e is error with the pdf = exp(e1) for e...

May2114 11:46 AM
mfb

1 
199 
Hi,
I've got a distribution of points in two dimensions and would like to demonstrate if these are randomly...

May1914 03:02 AM
stephenx_86

9 
391 
Hey all,
have a problem to solve for my new game game. really appreciate if someone can help me solve this issue:
...

May1814 09:39 AM
haplo3

3 
387 
Suppose I have an box (set) containing two different colored balls, red and blue, say.
Now, suppose the balls...

May1714 10:42 PM
FactChecker

6 
331 
I watch lastly a lottery game : there are 80 numbers, from them 20 are selected, and you can choose for example to...

May1614 08:24 PM
alan2

4 
284 
Hi. When it comes to hypothesis testing, what is the difference between the twosample tests and the paired test?
...

May1614 10:42 AM
Nikitin

1 
208 
This is a vague question and I apologize in advance for not being able to explain it better.
I'm combining r.v.'s...

May1514 05:09 PM
Stephen Tashi

7 
336 
let X1 and X2 be independent Poisson variables with respective parameters μ1 and μ2. Let S = X1 + X2. Is X1 given S=s...

May1314 04:26 PM
mathman

4 
335 
hey pf!
i was wondering if someone could either direct me to a source or help supply a proof on why skewness and...

May1214 09:48 PM
FactChecker

3 
401 
Gödelnumbering (in its broadest meaning, not necessarily the one Gödel used): On one side, it would seem that an...

May1114 01:00 AM
nomadreid

8 
352 
There seems to be two concepts of what constitutes a "meaningful" proposition in logic: one is that you can build up...

May1114 12:57 AM
nomadreid

4 
349 
I'm writing the paper on this experiment I just did. Basically I took sets of data for two variables (x,y) and I fit...

May1014 10:25 AM
saveGuard

3 
435 
Hello,
1. Does anybody know which book that gives a good explanation about monte carlo simulation?
I've read many...

May914 11:20 AM
stn

3 
390 
consider the following model for aggregate claim amounts S:
S=X1+X2+.....+XN
where the Xi are independent,...

May914 02:28 AM
Stephen Tashi

1 
259 
Hello, I'm David. I'm a new member here.
Could anyone of you help me? Where can i find the formal deduction of...

May714 08:47 PM
davidsousarj

4 
1,247 
suppose you have two random variables X and Y which are independent,
we want to form a new random variable Z=XY, if...

May714 08:33 AM
statdad

1 
265 
So I thought up a "proof" for infinite primes. I'm assuming I did something wrong, but I don't know what, it would be...

May614 08:57 PM
m84uily

10 
473 
Hi all,
Consider the scatter plot below (example only):
http://i.imgur.com/CpVZF04.png
The bottom subplot...

May514 07:15 PM
Ikaros

2 
264 
hey all (again)!
how do people create pdf's? it seems like we start by collecting info and turning it into a...

May514 01:32 PM
joshmccraney

2 
272 
Let (A,\mathcal A), (B,\mathcal B) be measurable spaces. Let p be a probability measure on (A,\mathcal A), and let...

May514 10:20 AM
economicsnerd

2 
510 
Q: How do you find the phase between an input and output signal? These signals are sweptsin (chirp:...

May414 10:18 PM
Greg Bernhardt

1 
497 
Suppose we have an M/M/##\infty## queue with arrival rate ##\lambda## and service rate ##\mu## that is empty at time...

May414 10:18 PM
Greg Bernhardt

1 
307 
Hello
Is it true that if a counting process has stationary increments, then it is time homogeneous?
stationary...

May414 10:18 PM
Greg Bernhardt

1 
306 
Pretty theoretical question here. I was talking with one of my friends the other day about a basic statistics problem...

May414 09:41 AM
mfb

1 
248 