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Set Theory, Logic, Probability, Statistics

- Fundamentals: Set theory, logic and proofs. Probability and 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 31,583
Hello, I just have a quick question understanding multiple comparisons and I'd appreciate any help because I'm on the...
Feb13-13 02:02 PM
ssd
3 659
I am coming across hiccups in my proof process. I am given this problem - Prove: if n is an integer and 3n + 2 is even...
Feb13-13 01:35 PM
ssd
7 1,353
Dear All Salam I tried to make the derivation of the Auto correlation time difference dependency for the 2nd...
Feb12-13 03:25 PM
mathman
1 536
http://i48.tinypic.com/244tkkj.png In this game you roll six dice. After each roll you must take at least one die...
Feb9-13 10:00 PM
Simon Bridge
3 798
Hi, Someone I know tried to convey me the meaning of {ℝ}, stating it represents a set of real numbers. But using...
Feb9-13 10:30 AM
kokolovehuh
7 916
Hi all, I am trying to figure out 1) What to call my problem so I can better research the literature, and 2) see if...
Feb8-13 01:09 PM
AlephZero
2 605
Two mariners report to the skipper of a ship that they are distances d1 and d2 from the shore. The skipper knows from...
Feb8-13 12:23 PM
jbriggs444
4 632
Hi Guys, Im doing my work placement at a steel processing facility and have been asked to derive a formula for...
Feb8-13 10:46 AM
nvn
8 685
Hello, Hello, I have recorded some discrete data with an unspecified distribution. I have generated some...
Feb8-13 07:42 AM
bradyj7
0 792
Hey I have kind of a general question. In my text book, there are lots of questions that go something like this: ...
Feb7-13 09:04 PM
Simon Bridge
1 483
I have a vector signal, \underline{x}(t), which is afflicted with Gaussian noise \underline{n}(t). I take a finite...
Feb7-13 06:39 PM
chiro
1 596
Hi, Letting W be a standard brownian motion, we define the first hitting times T_{a}=inf\{t:W(t)=a\} with a<0 and...
Feb7-13 06:04 PM
mathman
4 883
For binomial distributions, how can you tell which central tendency value (mean, median, or mode) and which...
Feb7-13 10:59 AM
Stephen Tashi
3 551
What would the cardinality of the set of all ordinal numbers be? Is it even known or does the question even make sense...
Feb6-13 06:25 PM
micromass
1 495
I have a rather technical question in boolean algebra to which I was not able to find an answer. What is the order...
Feb4-13 06:00 PM
D H
3 3,012
Hey guys, I have a question of how to go about answering a question. I am trying to decide what coding/database...
Feb4-13 02:51 PM
mfb
1 526
Hi everyone. Yesterday I was thinking about probability and real life and about the fact that we always expect...
Feb4-13 03:59 AM
ImaLooser
2 1,025
Suppose a box initially contains 1 red marble and 1 black marble and that, at each time n = 1, 2, ..., we randomly...
Feb3-13 03:28 PM
adnaps1
2 888
This isn't homework, just a combinatorics problem I came across. However, it is a textbook-style problem. So I'm...
Feb3-13 07:46 AM
oli4
3 1,351
Hello! I am using physical data to do an analysis (~30k measurements). These measurements include energies,...
Feb1-13 09:32 AM
Brais
5 2,761
This is a really basic point that I am getting held up on. In probability theory, we use PDFs and PMFs to describe...
Feb1-13 12:58 AM
Simon Bridge
4 751
Hello hello, I'm not looking just for an answer per say, but am also wondering the thought process in solving problems...
Jan31-13 02:10 PM
MLP
3 838
Dear Physics forum subscribers, I currently have a problem whereby I need to combine the magnitude and direction of...
Jan31-13 01:01 AM
Stephen Tashi
11 1,036
I was wondering what the typical approach is for creating a "mathematical object" such as the probability model...
Jan30-13 01:10 PM
micromass
2 809
Okay so I have a complex setup that I hope I can convey. I have 9 sites to which X can bind. 6 out of the 9 sites...
Jan29-13 12:11 PM
mtc1973
8 692
If we have calculated for three sequential bus stops bus headways distributions, passenger arrival distributions,...
Jan29-13 09:22 AM
Mark J.
0 593
rational number to count the next rational number from any rational number? We can count the next natural number,...
Jan29-13 08:01 AM
CompuChip
8 1,380
I was a bit confused with the pages that I attached... 1) "An intuitive estimate of \theta is the maximum of the...
Jan28-13 02:43 PM
mathman
6 1,106
In the page that I attached, it says "...while at the continuity points x of F_x (i.e., x \not= 0), lim F_{X_n}(x) =...
Jan27-13 07:23 PM
Stephen Tashi
3 940
Hello, This is not strictly a statistics forum, but I'm hoping you guys may have sufficient background to help me...
Jan27-13 08:23 AM
alan2
2 781
In risk, the attacking party rolls 3 die and the top two numbers of the 3 die rolled get put up against 2 die rolled...
Jan26-13 09:09 PM
kmwest
4 1,120
Suppose that you have a probability distribution P of a parameter which, for simplicity, it is two-valued. For...
Jan25-13 02:46 PM
mathman
3 782
Lets say if g(n) is not an upper bound on f(n), then does that mean g(n) is a lower bound on f(n)? Can anyone help...
Jan24-13 06:40 PM
Simon Bridge
5 700
To capture the actual Rent amount 95% of the time, predictions from the fitted equation should include a margin of...
Jan24-13 05:34 PM
Bacle2
4 1,139
Form a team by choosing 4 persons among 4 women and 7 men. You need at least 2 women in the team. How many ways to do...
Jan24-13 04:32 PM
tiny-tim
1 643
so i'm having problems with logic exercies especially when it asks you to prove long equations like when you just use...
Jan24-13 03:35 PM
Andrax
2 646
I'm trying to understand Godel's incompleteness theorems. But I have a difficulty. Are they about any set of related...
Jan24-13 12:47 PM
Shyan
6 1,015
Var(X)=\sum_{i=1}^N P(X_i)(X_i-EX)^2. Cov(X,Y) = \sum_{i=1}^N\sum_{j=1}^M P(X_i,Y_j)(X_i - EX)(Y_j - EY). If,...
Jan24-13 11:32 AM
Rasalhague
5 1,030
Hello everyone, For homework my instructor assigned problem from the book. To show which problems to do she wrote...
Jan24-13 10:37 AM
nicnicman
1 494
I hope someone can put me on the right track here. I need to derive the infinitesimal generator for a bridged gamma...
Jan24-13 04:19 AM
bpet
6 1,183

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