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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
micromass
1 32,567
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
arildno
1 1,778
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
techwonder
1 1,218
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
feynomite
0 1,686
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 4,372
I believe that Fibonacci primes are infinite. Currently there is no proof that there is an infinite number of...
Aug9-11 09:14 AM
fibonacci235
2 1,301
I have got a problem. The dice is thrown until 1 has been rolled twice. The two 1s do not need to be rolled...
Apr18-09 02:21 AM
Fiction123
8 1,532
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
mparks
2 1,209
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
FilupSmith
4 1,908
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
awkward
1 1,082
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
dacruick
3 1,276
normally distributed random variable with mean m and variance σ2. Find the PDF of Y
Oct20-10 02:51 PM
statdad
1 965
The ABC manufacturing company purchases a certain part from two suppliers (A supplier & B supplier). The parts...
Jul9-11 12:23 PM
pmsrw3
8 1,579
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
Firefight
4 988
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
NegativeDept
4 1,405
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
HallsofIvy
6 2,710
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
GeorgeRaetz
1 1,965
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
Firestrider
2 1,270
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
FirstInLine
2 1,179
Hi there. For a statistics assignment, I have two different questions involving testing hypotheses. The first...
May17-09 07:34 PM
aznshark4
2 7,159
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 1,402
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
xxxx0xxxx
4 1,991
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
tiny-tim
1 653
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
fishy_1980
6 2,242
hello forum, coherence function and correlation functions are the same thing. If we consider a sinusoidal signal...
Aug5-09 10:51 AM
fisico30
0 2,737
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
1 744
Hello Forum, usually the Pearson coefficient is meaninful to find the linear relationship between two variables....
Aug30-09 10:24 PM
wofsy
1 3,225
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 1,282
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
farful
1 13,527
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
1 300
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
Flashcop
2 2,663
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
FlashStorm
6 2,708
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
1 279
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
mtaboga
2 5,325
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
Edgardo
12 4,688
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 1,284
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
bpet
9 2,201
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
florenti
1 2,086
From my extremely small and inadequate knowledge of stochastic processes (and Wikipedia): A stochastic process is a...
Oct25-09 03:36 AM
bpet
1 1,639
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
fluffik
2 576
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
fluidistic
6 4,407

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