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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
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...
Oct28-11 11:37 AM
3 1,269
normally distributed random variable with mean m and variance σ2. Find the PDF of Y
Oct20-10 02:51 PM
1 959
The ABC manufacturing company purchases a certain part from two suppliers (A supplier & B supplier). The parts...
Jul9-11 12:23 PM
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...
Oct22-11 12:08 AM
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...
May28-13 08:55 AM
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...
May2-08 06:52 AM
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...
Feb1-11 09:27 PM
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...
Sep9-08 10:20 AM
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...
Aug18-08 10:11 AM
2 1,178
Hi there. For a statistics assignment, I have two different questions involving testing hypotheses. The first...
May17-09 07:34 PM
2 7,150
Hey guys, So i'm having trouble telling what the integration bounds should be when calculation the marginal PDF of...
Apr28-11 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...
Oct26-11 06:37 PM
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...
Jan24-13 04:32 PM
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...
Feb11-08 02:45 AM
6 2,238
hello forum, coherence function and correlation functions are the same thing. If we consider a sinusoidal signal...
Aug5-09 10:51 AM
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...
Aug5-09 12:25 PM
John Creighto
1 740
Hello Forum, usually the Pearson coefficient is meaninful to find the linear relationship between two variables....
Aug30-09 10:24 PM
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...
Feb15-12 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...
Sep30-09 02:52 PM
1 13,511
Hello, I am trying to construct a general function/method based on two sets of minimum/maximum data point...
Feb13-14 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 ...
Jun10-12 06:54 AM
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...
Nov19-07 03:20 AM
6 2,703
Hallo, I'm trying to compare the distance between two distributions that I got from a Kernel smoothing density...
Apr20-14 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...
Sep13-10 07:18 AM
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...
Nov16-11 09:37 AM
12 4,643
I have always struggled in understanding probability theory, but since coming across the measure theoretic approach it...
Oct23-12 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...
May29-11 02:17 AM
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...
Apr10-12 07:46 AM
1 2,074
From my extremely small and inadequate knowledge of stochastic processes (and Wikipedia): A stochastic process is a...
Oct25-09 03:36 AM
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...
Dec14-13 05:17 PM
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!}...
Sep4-12 10:23 PM
10 2,279
The book states that ##P(x|y,t)## represents the probability density that the potential has a value x at time t,...
Aug1-13 10:42 AM
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...
Oct22-13 11:45 AM
6 4,380
Hello, This is my first post - so let me know if I communicate incorrectly. To start, note that my thread title...
Jun29-10 09:09 PM
0 1,987
algorithm to prove lcm: a:=m b:=n while a != b if a < b a:= a + m else b:= b + n
Mar10-05 05:51 PM
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...
Mar21-05 07:10 PM
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...
Apr22-05 12:00 PM
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...
Apr2-05 07:50 PM
0 1,360
What are some of the elementary remedial procedures to multicollinearity (VIF >= 10) in linear regression? We were...
Jan1-09 10:59 AM
1 2,901
I was reading Stochastic Integration and Differential Equations by Protter and it had a nice theorem that every Levy...
Mar1-09 05:05 PM
0 1,565

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