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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 32,744
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...
Oct2-09 03:36 PM
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...
Aug1-08 09:27 AM
14 2,159
I'm a starting amateur mathematician. I'm studying Gödel's incompleteness theorem and have a couple of rookie...
Aug27-14 07:43 AM
2 241
Hi - My first post here and was looking for some help with this problem. Not sure where to start so hope some...
Feb8-12 06:52 PM
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...
Feb21-12 11:41 AM
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. ...
Aug25-14 09:28 PM
2 198
Hello everybody! I have a large set of items and, two-by-two, there exists some kind of attraction/repulsion that I...
Mar14-08 07:50 AM
1 885
Hello, I have a doubt about the distribution of random variables that maximize the differential entropy in a set of...
Jul11-13 12:32 PM
2 541
I am struggling to understand how a universal restriction works in description logic. I can understand the...
Jan19-12 06:43 PM
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....
Jan12-13 01:08 AM
6 1,232
What are the odds of something that statistically should happen 1 in 207 times happening 3 times in 66 occurrences? ...
Jan22-05 09:22 AM
1 1,785
Hi every body, i've a simple question in the programation for a certain methode called Monte Carlo method for...
Jul7-04 04:22 AM
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...
Dec18-08 03:59 AM
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...
Jun3-11 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...
Aug9-11 09:14 AM
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...
Apr18-09 02:21 AM
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...
Dec20-09 11:21 PM
2 1,216
So, today we were studying the introduction of probability. For me it is fairly simple (for now). My question is...
Jul15-14 09:45 PM
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....
Nov8-10 09:18 PM
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...
Oct28-11 11:37 AM
3 1,284
normally distributed random variable with mean m and variance σ2. Find the PDF of Y
Oct20-10 02:51 PM
1 970
The ABC manufacturing company purchases a certain part from two suppliers (A supplier & B supplier). The parts...
Jul9-11 12:23 PM
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...
Oct22-11 12:08 AM
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...
May28-13 08:55 AM
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...
May2-08 06:52 AM
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...
Feb1-11 09:27 PM
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...
Sep9-08 10:20 AM
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...
Aug18-08 10:11 AM
2 1,184
Hi there. For a statistics assignment, I have two different questions involving testing hypotheses. The first...
May17-09 07:34 PM
2 7,182
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 1,406
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...
Oct26-11 06:37 PM
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...
Jan24-13 04:32 PM
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...
Feb11-08 02:45 AM
6 2,255
hello forum, coherence function and correlation functions are the same thing. If we consider a sinusoidal signal...
Aug5-09 10:51 AM
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...
Aug5-09 12:25 PM
John Creighto
1 752
Hello Forum, usually the Pearson coefficient is meaninful to find the linear relationship between two variables....
Aug30-09 10:24 PM
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...
Feb15-12 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...
Sep30-09 02:52 PM
1 13,559
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
1 308
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 2,714

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