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

Feb2313 09:25 AM
micromass

1 
27,668 
Every body knows that:
x_{1}^2+x_{2}^2........x_{n}^2 =0\Longrightarrow x_{1}=0\wedge x_{2}=0........\wedge...

Jun110 03:31 AM
CompuChip

1 
954 
If Y1,Y2,Y2 ~ Multinomial with parameter (n,p1,p2,p3)
Prove that the conditional distribution of Y1 given Y3=m (m<n)...

Jun710 07:04 PM
EnumaElish

1 
1,780 
Hi,
I'm struggling to find a constructive proof (through natural deduction) of the material implication replacement...

Jun410 10:03 PM
JSuarez

1 
2,454 
An expression of the compactness theorem for sets of sentences is that: let T be a set of sentences in L. Then T has a...

Jun610 06:26 PM
JSuarez

1 
1,200 
Hi,
I've been trying to get my head around z and t statistics. and I almost have a matra in my head that "when the...

Jun910 08:09 AM
statdad

1 
1,712 
I am having trouble with this study question for my final:
A function from the real numbers to the real numbers is...

Jun910 02:28 PM
VeeEight

1 
1,107 
As it says in the title, will anyone please give me the equation (in prealgebraic terms) for discrete choice...

Jun1110 05:25 PM
EnumaElish

1 
1,688 
Hello Buddies,
I need to calculate "covariance matrix" of the given joint PDF function.
Joint PDF is...

Jun1010 11:46 AM
statdad

1 
2,769 
Hi,
if I have some spread over a very small range of binned values, how can I test if the distribution is normal....

Jun1010 05:49 PM
EnumaElish

1 
754 
Hi this is more of a set theory question really, i'm a bit confused,
say \mathcal{F} is collections of sets, and...

Jun1510 09:25 AM
EnumaElish

1 
569 
This is not a tutorial, but I thought I'd post a link to a Webpage dedicated to calculating the probability that two...

Jun1510 02:01 PM
moonman239

1 
2,289 
I just found a graph that uses 2006 data to estimate the probability of obtaining an offer that is at least the target...

Jun1710 09:49 PM
moonman239

1 
3,271 
I have a question on the chances of winning a lottery: If you buy 10 tickets in a lottery where the odds of you...

Jun1910 03:25 PM
SW VandeCarr

1 
1,000 
Hi I am currently reading:
http://www.cs.cornell.edu/~asaxena/learningdepth/saxena_ijcv07_learningdepth.pdf
...

Jun2010 05:23 AM
SW VandeCarr

1 
1,099 
Hello all,
I have the following question:
Assume (\Omega, \mathcal{F},P) = (,\mathcal{B}(),\lambda), where...

Jun2010 09:52 PM
DrRocket

1 
704 
hi i just need a simple yet uncomplicated proof for
(A UNION B)'S COMPLIMENTARY=A' INTERSECTION B'

Jun2010 04:56 AM
SW VandeCarr

1 
1,044 
A and B play a game of golf ( where the player with the lowest score wins). The deck is divided so that 17 cards goes...

Jun2110 02:43 PM
moonman239

1 
1,565 
I am familiar with the derivation of the probability density function of the sample mean but was looking for an...

Jun2110 02:01 PM
statdad

1 
758 
If I hypothesize that 70% of all my future coin tosses will come up heads, and I sample 15 coin tosses and get 13...

Jun2610 12:36 PM
EnumaElish

1 
877 
Hi. I have the following problem I am finding very difficult to solve.
Assume that the lifetime T is an r.v. that...

Jun2410 06:23 PM
SW VandeCarr

1 
1,803 
Hi:
I want to know the quadratic covariation of Brownian motion B(t) and poisson process N(t).Is it B(t)?
...

Jun2410 06:23 PM
wayneckm

1 
1,967 
Thanks everyone!:)
My Answer:
If I understand it right, since there are 3 dice, the probability that any of the...

Jul110 06:59 PM
mathman

1 
918 
Hi all,
I am stumped on how to achieve this with the data I have. My PI thinks there is a way, but I can't seem to...

Jul210 12:24 PM
EnumaElish

1 
834 
How would I calculate the probability of getting a royal flush in a game of Texas Holdem with 9 players sitting on a...

Jul410 09:02 AM
Fredrik

1 
970 
http://en.wikipedia.org/wiki/Edgeworth_series
What does "standardized cumulant" mean? It becomes clear in the...

Jul610 04:05 PM
SW VandeCarr

1 
1,627 
On this website (http://www.sciencenews.org/view/generic/id/60598/title/When_intuition_and_math_probably_look_wrong),...

Jul510 09:54 PM
DaveC426913

1 
2,198 
Hi.
I am going to have my Multivariate Statistics exam in two weeks. I am going by a book that isn't available in...

Jul710 01:42 PM
statdad

1 
1,729 
I have the following sequences of numbers:
1) 32, 16, 8, 4, 2, 1
2) 32, 16, 8, 2, 1, 0.5
3) 32, 16, 4, 2, 1, 0.5,...

Jul1010 01:20 PM
onako

1 
1,213 
Hello all,
I have the following question regarding the interchange between union and intersection.
\cup_{q <...

Jul2010 03:31 AM
yossell

1 
1,196 
Hello,
I am trying to find a clean solution for this (i.e. straightforward and academically acceptable). I...

Jul2110 09:55 PM
wmac

1 
680 
sum_{i=k}^{n} {i \choose k}i^{t}
...

Jul2710 07:22 AM
Eynstone

1 
1,318 
Hi, I'm having a little trouble with this question:
Among entering students at a certain college, the men averaged...

Jul2210 12:57 PM
CompuChip

1 
11,645 
Does anybody of you know about this problem and how to compensate for it?

Jul2310 01:42 PM
statdad

1 
674 
I'm stumped on what seems to be a simple proof question, but I don't know what to do.
Question:
(c) Show that the...

Aug410 02:19 AM
brian44

1 
3,534 
ｗｈａｔ ｉｓ ｔｈｅ ｓｉｎｇｌｅ ａｘｉｏｍ ａｎｄ ｒｕｌｅｓ ｏｆ ｉｎｆｅｒｅｎｃｅ？？

Aug210 11:34 PM
numberthree

1 
864 
How to prove the variance of the t distribution?

Aug610 07:59 AM
SW VandeCarr

1 
2,586 
i need full working out process...
thanks for helping me :)
1. Let X be a random variable with PMF
x 0 1 2 3 4...

Aug810 06:44 AM
adriank

1 
878 
I encountered a problem related to merchandise allocation. We are given the present available quantity of an item and...

Aug910 10:49 AM
sganesh88

1 
1,364 
I have N people and each of them has a uniform probability to belong to one of M countries. Now I wonder what is the...

Aug2310 04:45 AM
bpet

1 
1,246 
This is my question:
E1 = there is no rain
E2 = concrete material production is feasible
E3 = premix concrete is...

Aug1810 04:46 AM
SW VandeCarr

1 
1,304 