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

Feb2313 09:25 AM
micromass

1 
32,440 
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 
1,269 
normally distributed random variable with mean m and variance σ2. Find the PDF of Y

Oct2010 02:51 PM
statdad

1 
959 
The ABC manufacturing company purchases a certain part from two suppliers (A supplier & B supplier). The parts...

Jul911 12:23 PM
pmsrw3

8 
1,575 
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 
987 
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 
1,400 
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 
2,701 
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 
1,957 
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 
1,268 
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 
1,178 
Hi there.
For a statistics assignment, I have two different questions involving testing hypotheses.
The first...

May1709 07:34 PM
aznshark4

2 
7,150 
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 
1,400 
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 
1,983 
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 
649 
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 
2,238 
hello forum,
coherence function and correlation functions are the same thing.
If we consider a sinusoidal signal...

Aug509 10:51 AM
fisico30

0 
2,734 
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 
740 
Hello Forum,
usually the Pearson coefficient is meaninful to find the linear relationship between two variables....

Aug3009 10:24 PM
wofsy

1 
3,212 
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 
1,269 
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 
13,511 
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 
298 
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 
2,638 
Now before I'll post the question , I want to be clear. Technically , this WAS a homework question. BUT since I don't...

Nov1907 03:20 AM
FlashStorm

6 
2,703 
Hallo,
I'm trying to compare the distance between two distributions that I got from a Kernel smoothing density...

Apr2014 10:46 AM
Stephen Tashi

1 
274 
Hi all. I am searching for a good text book on probability theory. I finished my B.S. in mathematics last fall and...

Sep1310 07:18 AM
mtaboga

2 
5,299 
I'm trying to figure out the formula I need...
ok, say that r=5, so there are 5 items {A,B,C,D,E}
And we want to...

Nov1611 09:37 AM
Edgardo

12 
4,643 
I have always struggled in understanding probability theory, but since coming across the measure theoretic approach it...

Oct2312 11:37 AM
Stephen Tashi

7 
1,267 
Consider 2 players, of which 1 has one more coin than player 2. Both throw all their coins simultaneously and observe...

May2911 02:17 AM
bpet

9 
2,181 
Hi,
as I am new in Matlab, so I need your help.
I want to replace the following inverse matrix (X'*X)^1 with...

Apr1012 07:46 AM
florenti

1 
2,074 
From my extremely small and inadequate knowledge of stochastic processes (and Wikipedia):
A stochastic process is a...

Oct2509 03:36 AM
bpet

1 
1,633 
Hi, Iam a new user of Maple and having hard time to figure out what Iam doing wrong.
I need to set up Monty Hall...

Dec1413 05:17 PM
fluffik

2 
568 
I cannot seem to get the first moment of Poisson's distribution with parameter a: P(n_1)=\frac{a^{n_1}e^{a}}{n_1!}...

Sep412 10:23 PM
Mute

10 
2,279 
The book states that ##P(xy,t)## represents the probability density that the potential has a value x at time t,...

Aug113 10:42 AM
fluidistic

2 
1,707 
I have downloaded all the elo ratings of all active chess players in May of the FIDE and I have made an histogram. I...

Oct2213 11:45 AM
fluidistic

6 
4,380 
Hello,
This is my first post  so let me know if I communicate incorrectly.
To start, note that my thread title...

Jun2910 09:09 PM
flux_factor

0 
1,987 
algorithm to prove lcm:
a:=m
b:=n
while a != b
if a < b
a:= a + m
else
b:= b + n

Mar1005 05:51 PM
Bartholomew

7 
5,101 
1) (C > A) and (!C > B)
2) (A and C) or (!C and B)
I use the logic calculator and found these two formulas are...

Mar2105 07:10 PM
flying2000

4 
1,272 
{<>, ~} is not a complete set of connectives..
It seems that we can't use Propostions P is all true and thus lead to...

Apr2205 12:00 PM
nounou

27 
6,513 
Is that possible using six states to draw a NFSA to represent a string ending with a symbol which occured even times...

Apr205 07:50 PM
flying2000

0 
1,360 
What are some of the elementary remedial procedures to multicollinearity (VIF >= 10) in linear regression? We were...

Jan109 10:59 AM
statdad

1 
2,901 
I was reading Stochastic Integration and Differential Equations by Protter and it had a nice theorem that every Levy...

Mar109 05:05 PM
Focus

0 
1,565 