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

Feb2313 09:25 AM
micromass

1 
32,744 
1) My wife and I are very athletic. Between us, we jog an average of 5 miles a day. My wife jogs 10.
2) In freeway...

Oct209 03:36 PM
feelgooddan

0 
734 
Ok so over the summer I decided to read Apostol's Calculus Vol. 1 and my only background in calculus is in a high...

Aug108 09:27 AM
peos69

14 
2,159 
I'm a starting amateur mathematician. I'm studying Gödel's incompleteness theorem and have a couple of rookie...

Aug2714 07:43 AM
felipecoirolo

2 
241 
Hi  My first post here and was looking for some help with this problem.
Not sure where to start so hope some...

Feb812 06:52 PM
willem2

9 
1,639 
Hi there, I'm looking at a problem and wanted some help to advise if I'm going in the right direction.
I need to...

Feb2112 11:41 AM
FelixHelix

2 
1,552 
I find this problem pretty interesting and I'd like to know more about it and what topic of math it comes from.
...

Aug2514 09:28 PM
FactChecker

2 
198 
Hello everybody!
I have a large set of items and, twobytwo, there exists some kind of attraction/repulsion that I...

Mar1408 07:50 AM
xag

1 
885 
Hello,
I have a doubt about the distribution of random variables that maximize the differential entropy in a set of...

Jul1113 12:32 PM
ferreat

2 
541 
I am struggling to understand how a universal restriction works in description logic. I can understand the...

Jan1912 06:43 PM
ferrelhadley

0 
893 
So if there were say 10 teams that were randomly matched into alliances of 3 v 3 with a score given for eatch match....

Jan1213 01:08 AM
bpet

6 
1,232 
What are the odds of something that statistically should happen 1 in 207 times happening 3 times in 66 occurrences? ...

Jan2205 09:22 AM
arildno

1 
1,785 
Hi every body,
i've a simple question in the programation for a certain methode called Monte Carlo method for...

Jul704 04:22 AM
techwonder

1 
1,222 
This is a question I recently solved, but only with brute force computation. I don't know how to represent it with...

Dec1808 03:59 AM
feynomite

0 
1,691 
Hi y'all, wondering if you could help me with this. I have a data set with a linear relationship between the...

Jun311 12:42 AM
Stephen Tashi

4 
4,445 
I believe that Fibonacci primes are infinite. Currently there is no proof that there is an infinite number of...

Aug911 09:14 AM
fibonacci235

2 
1,313 
I have got a problem.
The dice is thrown until 1 has been rolled twice. The two 1´s do not need to be rolled...

Apr1809 02:21 AM
Fiction123

8 
1,542 
I'm getting a masters in pure math so my family assumes I know everything there is to know about numbers. My dad...

Dec2009 11:21 PM
mparks

2 
1,216 
So, today we were studying the introduction of probability. For me it is fairly simple (for now).
My question is...

Jul1514 09:45 PM
FilupSmith

4 
1,923 
In how many ways can 16 people be seated:
A. In a row, if 4 of the 16 do not want to sit next to one another
B....

Nov810 09:18 PM
awkward

1 
1,089 
if we toss 4 coins and we want to know the probability of having 3 heads we can easily calculate that using pascal...

Oct2811 11:37 AM
dacruick

3 
1,284 
normally distributed random variable with mean m and variance σ2. Find the PDF of Y

Oct2010 02:51 PM
statdad

1 
970 
The ABC manufacturing company purchases a certain part from two suppliers (A supplier & B supplier). The parts...

Jul911 12:23 PM
pmsrw3

8 
1,586 
You're about to flip a quarter while your friend guesses which side will come up. You agree to switch turns after one...

Oct2211 12:08 AM
Firefight

4 
997 
I'll explain the problem in a nutshell.
2% of brand X tires are faulty, 98% aren't.
If you take a car with 4...

May2813 08:55 AM
NegativeDept

4 
1,415 
a discrete random variable has range space {1, 2, ..., n} and satisfies P(X=j) = j/c for some number c. Find c, and...

May208 06:52 AM
HallsofIvy

6 
2,718 
Hi Guys,
I've used this forum as a great resource for a while now and it's always helped me out. Now I'm really stuck...

Feb111 09:27 PM
GeorgeRaetz

1 
1,974 
OK this is the first assignment I have in this class and I can't figure out how to negate and simplify the logical...

Sep908 10:20 AM
Firestrider

2 
1,278 
Here's something I know there must be a way to easily figure out... but not by me!
THE QUESTION...
if I have x...

Aug1808 10:11 AM
FirstInLine

2 
1,184 
Hi there.
For a statistics assignment, I have two different questions involving testing hypotheses.
The first...

May1709 07:34 PM
aznshark4

2 
7,182 
Hey guys,
So i'm having trouble telling what the integration bounds should be when calculation the marginal PDF of...

Apr2811 12:23 AM
Stephen Tashi

1 
1,406 
I've always thought that ∈ is defined when talking about elements in a set. For example, if A is a set and x is an...

Oct2611 06:37 PM
xxxx0xxxx

4 
2,008 
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 
659 
Hi all,
assume we have a sample space with 2^n points. (it size is 2^n for some natural n)
I need to prove that...

Feb1108 02:45 AM
fishy_1980

6 
2,255 
hello forum,
coherence function and correlation functions are the same thing.
If we consider a sinusoidal signal...

Aug509 10:51 AM
fisico30

0 
2,742 
Hello Forum,
I am not clear on what higher order statistics actually mean. I know that if a process is Gaussian, it...

Aug509 12:25 PM
John Creighto

1 
752 
Hello Forum,
usually the Pearson coefficient is meaninful to find the linear relationship between two variables....

Aug3009 10:24 PM
wofsy

1 
3,240 
Hi there, just wondered if someone could help me?
I have a set of data from an experiment and have fitted a cosine...

Feb1512 09:50 AM
Stephen Tashi

9 
1,302 
Does anyone know how to create a matrix of complex Gaussian noise (with unit power = 1 and mean of zero)? I need to...

Sep3009 02:52 PM
farful

1 
13,559 
Hello,
I am trying to construct a general function/method based on two sets of minimum/maximum data point...

Feb1314 06:08 PM
Stephen Tashi

1 
308 
The following question appeared on a practice exam:
For
f(x,y) = 24xy if 0<x+y<1 , 0<x,y
0 elsewhere
...

Jun1012 06:54 AM
Flashcop

2 
2,714 