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

Feb2313 09:25 AM
micromass

1 
30,486 
Two mariners report to the skipper of a ship that they are distances d1 and d2 from the shore. The skipper knows from...

Feb813 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...

Feb813 10:46 AM
nvn

8 
682 
Hello,
Hello,
I have recorded some discrete data with an unspecified distribution.
I have generated some...

Feb813 07:42 AM
bradyj7

0 
791 
Hey I have kind of a general question.
In my text book, there are lots of questions that go something like this:
...

Feb713 09:04 PM
Simon Bridge

1 
480 
I have a vector signal, \underline{x}(t), which is afflicted with Gaussian noise \underline{n}(t). I take a finite...

Feb713 06:39 PM
chiro

1 
594 
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...

Feb713 06:04 PM
mathman

4 
879 
For binomial distributions, how can you tell which central tendency value (mean, median, or mode) and which...

Feb713 10:59 AM
Stephen Tashi

3 
547 
What would the cardinality of the set of all ordinal numbers be? Is it even known or does the question even make sense...

Feb613 06:25 PM
micromass

1 
492 
I have a rather technical question in boolean algebra to which I was not able to find an answer.
What is the order...

Feb413 06:00 PM
D H

3 
2,969 
Hey guys, I have a question of how to go about answering a question. I am trying to decide what coding/database...

Feb413 02:51 PM
mfb

1 
523 
Hi everyone.
Yesterday I was thinking about probability and real life and about the fact that we always expect...

Feb413 03:59 AM
ImaLooser

2 
997 
Suppose a box initially contains 1 red marble and 1 black marble and that, at each time n = 1, 2, ..., we randomly...

Feb313 03:28 PM
adnaps1

2 
887 
This isn't homework, just a combinatorics problem I came across. However, it is a textbookstyle problem. So I'm...

Feb313 07:46 AM
oli4

3 
1,336 
Hello!
I am using physical data to do an analysis (~30k measurements). These measurements include energies,...

Feb113 09:32 AM
Brais

5 
2,741 
This is a really basic point that I am getting held up on.
In probability theory, we use PDFs and PMFs to describe...

Feb113 12:58 AM
Simon Bridge

4 
746 
Hello hello, I'm not looking just for an answer per say, but am also wondering the thought process in solving problems...

Jan3113 02:10 PM
MLP

3 
835 
Dear Physics forum subscribers,
I currently have a problem whereby I need to combine the magnitude and direction of...

Jan3113 01:01 AM
Stephen Tashi

11 
1,033 
I was wondering what the typical approach is for creating a "mathematical object" such as the probability model...

Jan3013 01:10 PM
micromass

2 
805 
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...

Jan2913 12:11 PM
mtc1973

8 
689 
If we have calculated for three sequential bus stops bus headways distributions, passenger arrival distributions,...

Jan2913 09:22 AM
Mark J.

0 
590 
rational number to count the next rational number from any rational number?
We can count the next natural number,...

Jan2913 08:01 AM
CompuChip

8 
1,368 
I was a bit confused with the pages that I attached...
1) "An intuitive estimate of \theta is the maximum of the...

Jan2813 02:43 PM
mathman

6 
1,099 
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) =...

Jan2713 07:23 PM
Stephen Tashi

3 
934 
Hello,
This is not strictly a statistics forum, but I'm hoping you guys may have sufficient background to help me...

Jan2713 08:23 AM
alan2

2 
779 
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...

Jan2613 09:09 PM
kmwest

4 
1,113 
Suppose that you have a probability distribution P of a parameter which, for simplicity, it is twovalued. For...

Jan2513 02:46 PM
mathman

3 
779 
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...

Jan2413 06:40 PM
Simon Bridge

5 
698 
To capture the actual Rent amount 95% of the time, predictions from the fitted equation should include a margin of...

Jan2413 05:34 PM
Bacle2

4 
1,130 
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...

Jan2413 04:32 PM
tinytim

1 
636 
so i'm having problems with logic exercies especially when it asks you to prove long equations like when you just use...

Jan2413 03:35 PM
Andrax

2 
643 
I'm trying to understand Godel's incompleteness theorems.
But I have a difficulty.
Are they about any set of related...

Jan2413 12:47 PM
Shyan

6 
1,006 
Var(X)=\sum_{i=1}^N P(X_i)(X_iEX)^2.
Cov(X,Y) = \sum_{i=1}^N\sum_{j=1}^M P(X_i,Y_j)(X_i  EX)(Y_j  EY).
If,...

Jan2413 11:32 AM
Rasalhague

5 
1,028 
Hello everyone,
For homework my instructor assigned problem from the book. To show which problems to do she wrote...

Jan2413 10:37 AM
nicnicman

1 
493 
I hope someone can put me on the right track here. I need to derive the infinitesimal generator for a bridged gamma...

Jan2413 04:19 AM
bpet

6 
1,178 
Say given a simple acyclic directed graph with n nodes , which includes a starting node s0 and ending node e0 (i.e., a...

Jan2313 03:18 AM
bpet

1 
910 
I'm interested in the question of defining a reliability parameter of a model of the probability of an event.
Say...

Jan2213 04:55 PM
disregardthat

7 
873 
According to the truth tables in my computer architecture text, P → Q is false if P is true and Q false; and true...

Jan2213 08:54 AM
ato

14 
1,724 
Hi,
I try to teach myself Hidden Markov Models. I am using this text
www.cs.sjsu.edu/~stamp/RUA/HMM.pdf as...

Jan2113 02:12 PM
SamTaylor

4 
1,196 
http://www.physicsforums.com/attachment.php?attachmentid=54893&stc=1&d=1358739001
Is this sufficient?

Jan2113 12:58 PM
blindgibson27

5 
720 
Does μx mean the same thing as E? Also, does σ2x mean the same thing as Var X?

Jan2113 02:01 AM
whitehorsey

2 
855 