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

Feb2313 09:25 AM
micromass

1 
32,456 
I know that function is a type of relation. What i acctually need to know is that; Are these relations Equivalent all...

Feb2313 08:50 AM
micromass

1 
474 
i would like to have some help here.. it is a problem in probabilities i can not find anyway to start finding the...

Feb2313 06:22 AM
tinytim

14 
330 
I have a crooked line of data points,want to project data on the straight line.If I go standard leastsquare...

Feb2213 07:53 PM
chiro

1 
545 
\exists{x}(P(x)\Rightarrow{Q(x)})\equiv{\forall{x}P(x)\Rightarrow{\exists{x}Q(x)}}
I am able to derive this...

Feb2213 01:10 PM
mfb

3 
579 
Hi All,
I often see this term when factorizing out a matrix from brackets
A(some other term)A^T
where I...

Feb2213 12:42 PM
MikeLowri123

2 
513 
I have trouble disproving the following expression
I worded it as follows:
The product of certain number and...

Feb2213 08:56 AM
Bashyboy

2 
629 
My statistics professor wanted me to remember an infinite series sum, but i cant remember what it was
i think it was...

Feb2213 08:38 AM
mfb

1 
445 
Batter A has a batting average (probability of getting a hit) of .320. Batter B has a
batting average of .280. If...

Feb2113 07:08 AM
shadedude123

2 
951 
Hi everyone,
I have a plot of some data points that have error bars on the y axis.
A bit of software I am using...

Feb2113 05:58 AM
kop442000

4 
805 
Hello,
I am trying to quantify the difference between two discrete distributions. I have been reading online and...

Feb2113 12:13 AM
ImaLooser

4 
979 
I have been trying to teach myself some category theory, and have been working through some proofs. I didn't...

Feb2013 11:39 PM
Jim Kata

0 
413 
Hey all I have what I assume to be a fairly vague question. I'm taking a programming class right now for MATLAB and...

Feb2013 04:32 AM
CompuChip

2 
999 
Hello my name is Andy I'm in highschool, and I have a bit of a confusion or lack of information. Ok so I have been...

Feb2013 03:28 AM
Simon Bridge

1 
664 
Hello PF
This might be a fairly simple question to most of you, but I was given this problem (don't worry, I...

Feb2013 01:47 AM
ImaLooser

2 
1,977 
I know that there are many websites that explain Pearson's chisquare test, but they all leave the same questions...

Feb1913 07:58 AM
nomadreid

4 
1,087 
Hi all,
Just checking my answer in the following problem. Suppose 100 women with a probabilty P of getting pregnant...

Feb1913 05:36 AM
Stellaferox

0 
427 
Hello,
How would you/or is it possible to combine two transitional probability matrices?
Say for example I...

Feb1813 08:07 PM
chiro

65 
8,708 
Let's say that I'm playing a card game with 3 friends. The game involves a full deck of regular playing cards (52...

Feb1813 04:35 PM
awkward

2 
762 
The page are under the attachment.
How to solve the Harry drives crosscountry problem without technical symbol but...

Feb1713 12:28 PM
Alan Lui

0 
803 
Given a sample of a normally distributed population, then the sample variance ≈the population variance divided by the...

Feb1513 07:55 AM
nomadreid

5 
881 
I realize you can transform the data in many ways, but I really can't find a method to solve this particular scenario...

Feb1513 06:04 AM
ssd

6 
1,217 
I'm putting together a lab report and my result is off from the known value by 1.43 σ. According to the error...

Feb1513 05:49 AM
ssd

6 
629 
I've seen in some probability theory books that the classical definition of probability is a probability measure, it...

Feb1413 12:25 PM
ssd

8 
1,259 
##S = \bigcup _{i=1}^{∞}\left\{{0,1}\right\}^i ##
methinks yes because:
##S = \bigcup...

Feb1313 10:46 PM
Bachelier

6 
876 
See attachment for the question.

∀x ∈ D, if P(x) then Q(x). this means ∀x P(x) > Q(x).
all you...

Feb1313 09:01 PM
persian52

5 
1,142 
Hi all , here's hoping someone could help me with this problem. :)
The problem is basically as follow:
You have...

Feb1313 03:29 PM
mathman

9 
1,328 
Dear all ,
Thank you for any help in advance.
I have a graph in Excel which represents counts (photons) vs pixel...

Feb1313 02:10 PM
ssd

2 
1,313 
Hello, I just have a quick question understanding multiple comparisons and I'd appreciate any help because I'm on the...

Feb1313 02:02 PM
ssd

3 
680 
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...

Feb1313 01:35 PM
ssd

7 
1,413 
Dear All
Salam
I tried to make the derivation of the Auto correlation time difference dependency for the 2nd...

Feb1213 03:25 PM
mathman

1 
542 
http://i48.tinypic.com/244tkkj.png
In this game you roll six dice. After each roll you must take at least one die...

Feb913 10:00 PM
Simon Bridge

3 
812 
Hi,
Someone I know tried to convey me the meaning of {ℝ}, stating it represents a set of real numbers. But using...

Feb913 10:30 AM
kokolovehuh

7 
947 
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...

Feb813 01:09 PM
AlephZero

2 
623 
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 
644 
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 
694 
Hello,
Hello,
I have recorded some discrete data with an unspecified distribution.
I have generated some...

Feb813 07:42 AM
bradyj7

0 
809 
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 
493 
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 
601 
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 
907 
For binomial distributions, how can you tell which central tendency value (mean, median, or mode) and which...

Feb713 10:59 AM
Stephen Tashi

3 
556 