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Forum: Probability

Probability course and homework discussion. Probability distributions. Probability theory, stochastic processes

  1. Arrow Sticky Thread Sticky: We only provide homework help to those who show effort

    Welcome to Talk Stats Forum. In order to keep homework help effective and efficient, we request all members to abide by these guidelines: 1)...

    Started by quark‎, 09-30-2005 09:44 AM
    • Replies: 0
    • Views: 30,330
    09-30-2005, 09:44 AM Go to last post
  1. Determining number of samples to collect

    Hi, I am doing a project in determining if there is a statistically significant difference between conducting a particular type of cleaning process...

    Started by mulamootil‎, 07-30-2010 02:15 PM
    • Replies: 1
    • Views: 3,520
    08-03-2010, 12:11 PM Go to last post
  2. Determining on Probability from multiplt associative probabilities

    Hi, I have a question regarding the associative laws of probabilty. Basic question is that I need to find the probability of a player X...

    Started by sandeepy02‎, 03-24-2012 12:09 AM
    • Replies: 0
    • Views: 1,116
    03-24-2012, 12:09 AM Go to last post
  3. Determining p-values, significant cutoffs and false discovery in non-normal data

    Hi, I have a set of data points from a genetic study. I wish to ascertain which of these data points is statistically significant. The data is not...

    Started by gwilymh‎, 06-19-2013 06:37 PM
    cutoff, false discover, multiple testing, normal distributed, probabilty
    • Replies: 2
    • Views: 1,330
    06-21-2013, 12:03 PM Go to last post
  4. Determining sample size

    Hello, It's been a couple semesters since I took my last stats class and I have run into a problem that I need help with. I don't ever remember...

    Started by tactical‎, 02-08-2012 02:46 PM
    • Replies: 0
    • Views: 1,378
    02-08-2012, 02:46 PM Go to last post
  5. determining the most probable permutation of a set

    Is there any way to determine the most probable permutation of any given set? For example, given the set of letters SKTANH, is there a way to compute...

    Started by bonbonbaron‎, 09-30-2017 09:54 AM
    permutation, recurrent neural network, sequence
    • Replies: 2
    • Views: 162
    09-30-2017, 02:37 PM Go to last post
  6. Determining the probability of an electric car charging station being available?

    Hi there, I'm just wondering if anybody would know of a way of determining the probability of an event. I trying to figure out how I could...

    Started by bradyj2‎, 06-27-2012 09:29 AM
    • Replies: 0
    • Views: 1,024
    06-27-2012, 09:29 AM Go to last post
  7. Determining the probability that two data sources are the same

    I've been looking for the answer to this problem for a while now and I think a large part of it is that I don't know how to frame the question. Here...

    Started by TommyJimmy‎, 01-03-2013 09:43 AM
    • Replies: 5
    • Views: 2,018
    05-10-2013, 03:50 AM Go to last post
  8. Determining the test to be applied

    Find the 96% confidence limits for the true mean weekly study time of students if a sample of 25 had an average of 20 hrs per week and a sd of 3 hrs.

    Started by thedeath‎, 11-21-2006 01:28 AM
    • Replies: 3
    • Views: 1,757
    11-22-2006, 11:20 AM Go to last post
  9. Dice and Don't Cares

    Hi. I'm working on deriving a probability formula to help in some research I'm doing, but I've hit a wall. I've managed to reduce my problem down...

    Started by zogg‎, 10-13-2011 07:26 AM
    dice
    • Replies: 3
    • Views: 1,969
    10-17-2011, 08:19 AM Go to last post
  10. dice prob. of sum

    I have a question about a probability of sum in dices. lets say its a dice with 20 or more sides. for normal dice i just write for each sum of 2...

    Started by perchick‎, 04-19-2012 01:29 PM
    • Replies: 4
    • Views: 1,985
    04-20-2012, 02:49 AM Go to last post
  11. Dice probability

    Hello people, I have a very simple probability question that I need to solve a problem (recreational mathematics). Anyway, I would like to know how...

    Started by DanFran‎, 09-08-2011 09:55 AM
    • Replies: 3
    • Views: 2,013
    09-08-2011, 11:52 AM Go to last post
  12. dice probability

    Started by juantheron‎, 04-12-2012 03:20 AM
    • Replies: 5
    • Views: 1,661
    04-13-2012, 05:01 AM Go to last post
  13. Dice Probability (2d6, 3d6, 4d6)

    I would like to find the probabilities of rolling a result using different numbers of six-sided dice. I am looking for the best way to figure out the...

    Started by Corkle‎, 05-08-2014 02:36 AM
    • Replies: 2
    • Views: 6,004
    05-10-2014, 12:50 AM Go to last post
  14. Dice Probability (Yahtzee Related)

    hi, I am currently doing my Computer Science Dissertation and it it to create a program that can play Yahtzee. My planning involves lots of...

    Started by Phil‎, 10-16-2007 11:19 AM
    • Replies: 1
    • Views: 9,106
    10-16-2007, 02:28 PM Go to last post
  15. Dice probability - at least 2 's out of ten

    Hi If I roll a fair dice 10 times, what is the probability of getting at least two 6's? edit: Which method shall I use? Say, it's at least 3...

    Started by lorenzo‎, 12-17-2008 07:09 AM
    • Replies: 1
    • Views: 10,292
    12-17-2008, 09:23 PM Go to last post
  16. Dice probability problem

    2 defending dice do battle with a attacking dice, where a can be any positive integer. The highest scoring defender die is paired with the highest...

    Started by GameGod‎, 05-25-2013 08:46 AM
    • Replies: 10
    • Views: 2,714
    05-28-2013, 06:41 PM Go to last post
  17. Dice probability problem

    Hi everyone, I have a simple dice problem but am having trouble with it because it's hard to google something like this. Here it is... I have...

    Started by benali‎, 12-15-2014 07:39 PM
    • Replies: 2
    • Views: 1,640
    12-16-2014, 08:56 AM Go to last post
  18. dice probability question

    I have a game that requires rolling 16 sided dice numbered 0-15. I would like to know the probability of rolling a sum of less then 20 using four...

    Started by nod2003‎, 11-27-2007 11:23 PM
    • Replies: 0
    • Views: 2,799
    11-27-2007, 11:23 PM Go to last post
  19. Dice probability question

    What are the odds of rolling 2d6(2 6-sided dice) three times and getting two 3s? How about rolling 4 times; 5 times? I know rolling a 2d6 has a...

    Started by CBOR‎, 04-30-2016 12:34 PM
    dice, probability
    • Replies: 1
    • Views: 1,090
    04-30-2016, 01:36 PM Go to last post
  20. Dice probability question - Settlers of Catan

    Hello everyone, Let me begin by saying that this isn't a homework question. Rather, this is a question that relates to a personal inquiry into...

    Started by PrettyCities‎, 12-06-2013 08:26 PM
    • Replies: 3
    • Views: 4,762
    12-07-2013, 06:40 AM Go to last post
  21. Dice probability with limited reroll

    Hello, I'm having difficulty understanding this problem and I was wondering if someone had an answer. Let n = \text{Number of dice} = 3 p_s...

    Started by Dan K‎, 03-20-2016 06:26 PM
    dice, probability
    • Replies: 2
    • Views: 1,618
    03-23-2016, 12:13 PM Go to last post
  22. Dice Probablility

    I'm setting up a dice game. I'll try to keep its mechanics as simple as possible. You roll a six sided die, then you can choose to roll more...

    Started by RaineAndrews‎, 01-20-2009 12:29 PM
    • Replies: 1
    • Views: 2,172
    01-21-2009, 09:03 AM Go to last post
  23. Dice Problem

    Hi there, There's a the problem I've been trying to solve for the past two days. I have 5 dice, each with a different number of sides. Dice A:...

    Started by Fatman‎, 05-02-2013 02:45 PM
    • Replies: 2
    • Views: 1,986
    05-02-2013, 05:46 PM Go to last post
  24. Dice Question

    Hey folks, this is a question i'm trying to solve: You roll a die, winning $1 for rolling a 2 or a 4, and $7 for a 6. You lose $2 if the number...

    Started by yon‎, 07-07-2009 01:26 AM
    • Replies: 1
    • Views: 2,147
    07-07-2009, 12:39 PM Go to last post
  25. Dice roll

    Sorry if this topic has been discussed before. I hate looking through forums randomly for an answer to a question. So, maybe one of you could help...

    Started by lookoverhear‎, 08-29-2008 07:18 PM
    • Replies: 6
    • Views: 2,631
    08-29-2008, 10:21 PM Go to last post
  26. Dice Roll Game Probabilities

    Hello everyone, I have a bit of a probability question for you as it has been quite awhile since I have been in school, and I canít remember the...

    Started by BillMisc‎, 10-13-2013 10:50 AM
    • Replies: 3
    • Views: 1,985
    10-13-2013, 01:36 PM Go to last post
  27. dice rolling odds. please help!

    Suppose you have a FIVE sided dice. One of the sides has a star on it, the other four sides are blank. Suppose you rolled it 10 times. What are the...

    Started by ospreyx‎, 05-06-2015 06:59 PM
    dice, odds, probability, statistics
    • Replies: 1
    • Views: 1,249
    05-06-2015, 08:38 PM Go to last post
  28. Dice Throwing

    2 dice thrown together for 3 times, what is the probability that for any of the 3 throws, I will get the same number on both dice? Thx ! Andrew

    Started by andrewhzh1‎, 12-16-2010 08:51 AM
    • Replies: 1
    • Views: 3,375
    12-16-2010, 08:56 AM Go to last post
  29. Dice Total Odds Calculator

    I have posted a calculator to the Google Play Store for computing the probability of obtaing a particular sum when throwing dice:...

    Started by ksoileau‎, 01-29-2017 06:32 PM
    • Replies: 0
    • Views: 1,752
    01-29-2017, 06:32 PM Go to last post
  30. Die probabilistic

    i am reading Mostellers book on 50 difficult probability questions. the question I am struggling with is on the average, how many times must a die be...

    Started by gibbspr@yahoo.co.uk‎, 08-02-2012 07:28 AM
    • Replies: 8
    • Views: 1,957
    08-02-2012, 04:57 PM Go to last post
  31. die probability

    Two fair dices are thrown and you are told that the sum of upturned face is equal to 7.what is the probabilty that neither face os equal to 6??is it...

    Started by andysim1983‎, 05-04-2009 05:55 AM
    • Replies: 0
    • Views: 1,899
    05-04-2009, 05:55 AM Go to last post
  32. Die throwing competition, probability of winning

    Suppose a friend and I are playing a game with a fair die. We throw alternatively and whoever rolls a 6 first wins. I get to roll first. What is the...

    Started by statsprobs‎, 02-26-2013 11:21 AM
    • Replies: 9
    • Views: 2,541
    02-26-2013, 08:16 PM Go to last post
  33. Die throwing game

    A fair die is thrown a number of times and every time we count the number of dots (cumulative), until the total number of dots is bigger than or...

    Started by Ego7894612‎, 09-09-2010 07:26 AM
    • Replies: 7
    • Views: 4,826
    09-10-2010, 02:37 PM Go to last post
  34. Difference between binary logistic regression analyses and multivariate regression

    I am new to this forum, hope this is in the correct placce. Can someone explain the difference between these two?

    Started by DSW‎, 04-06-2013 04:20 PM
    • Replies: 1
    • Views: 3,104
    04-06-2013, 09:09 PM Go to last post
  35. difference between binomial exact test and fisher's exact test

    Hello all, So I know the general difference between these tests --binomial exact test is used to test for a significant difference between and...

    Started by statsathens‎, 05-12-2011 02:03 PM
    • Replies: 1
    • Views: 18,463
    01-31-2012, 11:04 AM Go to last post
  36. Difference between likelihood and the posterior probability (bayesian statistics)

    Hello everyone. I am having a little bit of trouble wrapping my head around the difference between the likelihood and the posterior probability in a...

    Started by will22‎, 04-13-2013 02:46 PM
    • Replies: 4
    • Views: 9,541
    04-15-2013, 08:12 AM Go to last post
  37. Difference between mean and expected value

    Could someone please explain as simply as possible the difference between mean and expected value? Here is my problem: This is for my math stats...

    Started by defrost‎, 12-06-2013 09:58 PM
    • Replies: 2
    • Views: 4,646
    12-07-2013, 11:06 AM Go to last post
  38. Difference between p(y=0|x=0) and p(x=0,y=0)

    Another Trivial question: I have been asked to calculate the joint probability i.e. p(X=0,Y=0) and i have been provided by P(Y=0|X=0), is it the...

    Started by Yashodhar.rao‎, 10-06-2013 01:15 PM
    conditional probability, joint probability
    • Replies: 1
    • Views: 1,475
    10-06-2013, 10:18 PM Go to last post
  39. Difference between probability of an individual and of a population?

    Im a little confused as to finding the probability of an individual to a population. My answers don't look correct. Could anyone help me out? A...

    Started by mahouyuki‎, 10-11-2013 10:45 PM
    • Replies: 1
    • Views: 2,146
    10-12-2013, 12:27 AM Go to last post
  40. Difference between two Normal Distributions

    I have a problem where I have two Normal distributions both with a standard deviation of 20 and a difference between the means of 17. I want to work...

    Started by tja26‎, 06-13-2006 10:41 AM
    • Replies: 0
    • Views: 8,071
    06-13-2006, 10:41 AM Go to last post
  41. Difference of expectations of RV's given arbtrary pdfs

    I've been beating my head on this for a while... Let X and Y have pdf's f & g respectively such that \begin{cases} f(x) >= g(x) & \mbox{if } x...

    Started by frito898‎, 10-08-2014 05:23 PM
    • Replies: 1
    • Views: 1,440
    10-09-2014, 04:23 AM Go to last post
  42. Difference of two Gaussian RV's

    Haven't done stats in awhile and now im stuck in a class and im the only undergrad. :confused: If I could get some guidance I could probrabaly...

    Started by HHB‎, 01-11-2011 06:18 PM
    • Replies: 8
    • Views: 10,449
    01-11-2011, 09:28 PM Go to last post
  43. difference of two independent Poisson random variables

    Why the difference of two independent Poisson random variables doesn't have Poisson distribution? Demonstrate it.

    Started by LIPI‎, 02-10-2015 07:57 PM
    • Replies: 6
    • Views: 4,074
    02-13-2015, 11:50 AM Go to last post
  44. Difference powerlaw, lognormal and streteched exponential (Weibull) function

    I am currently fitting above mentioned functions to my data and I can observe, that both lognormal and Weibull are better fits than powerlaw. In...

    Started by killver‎, 10-08-2013 05:42 AM
    distribution, lognormal, powerlaw, weibull
    • Replies: 2
    • Views: 2,722
    10-08-2013, 07:40 AM Go to last post
  45. differences between one-tailed and two-tailed P-value

    I am doing hypothesis testing using t-test and p-value. I calculate my p-value based on the degrees of freedom and the t-test value. The p-value is a...

    Started by lgarcia‎, 04-11-2010 01:33 PM
    • Replies: 9
    • Views: 12,073
    04-12-2010, 09:51 PM Go to last post
  46. Question Differences of proportions

    Please forgive what I assume is the simplicity of these related problems, but I don't seem to find the solution elsewhere. 1) 2 cards are...

    Started by WhiskeyJack‎, 05-16-2016 08:52 AM
    • Replies: 0
    • Views: 1,511
    05-16-2016, 08:52 AM Go to last post
  47. Different arrangments of n 0's and m 1's

    This simply stated problem is giving me some trouble: How many different ways can I arrange n 0's and m 1's? Perhaps someone would direct me...

    Started by BigBugBuzz‎, 06-05-2013 05:56 PM
    combinations
    • Replies: 5
    • Views: 1,667
    06-06-2013, 05:54 AM Go to last post
  48. Different between "X % more likely" vs. "X times more likely"

    I often see something like "smokers are 10% more likely to get cancer than non-smokers." Is this equivalent to saying smokers are "10 times more...

    Started by grreee12‎, 09-21-2011 10:25 PM
    odds ratios, probability
    • Replies: 0
    • Views: 28,884
    09-21-2011, 10:25 PM Go to last post
  49. Different Interpretations of the Central Limit Theorem

    My friend and I are having an argument about the meaning of CLT. It led to me build this javascript experiment which you may enjoy:...

    Started by aut0pilot101‎, 06-18-2013 06:59 PM
    • Replies: 2
    • Views: 3,492
    06-18-2013, 07:33 PM Go to last post
  50. Different solutions when using direct calculation and Chebychev's inequality

    Hi all, I have a question that I can't find answer to: I have 10 random variables X1, X2....X10 which are all independent and exponentially...

    Started by stasezer‎, 02-22-2017 11:39 AM
    chebychev's inequality, probability density
    • Replies: 1
    • Views: 1,965
    02-23-2017, 06:05 PM Go to last post
  51. differential distribution frequency

    Hi there. pls I'm studying the production of energy from sawdust.So I need a firm grip in powder technology.Can anyone pls show me mathematically how...

    Started by PSDman‎, 05-14-2015 03:26 PM
    • Replies: 0
    • Views: 1,230
    05-14-2015, 03:26 PM Go to last post
  52. Difficult Integral standard normal pdf/cdf

    I would like to get an explicit analytical form for the integral (below)...or something close to it with an associated (small) error term. (Note that...

    Started by Dragan‎, 05-28-2010 11:37 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 13,945
    05-31-2010, 09:35 AM Go to last post
  53. Difficult probability question

    Hi - I'm really stuck with this question. I can't find any example quite like it anywhere: Two friends, Ben and Jerry, agree to a random swap of...

    Started by Dojo‎, 10-28-2011 10:59 AM
    • Replies: 5
    • Views: 3,289
    10-28-2011, 11:42 AM Go to last post
  54. Difficult probability question

    I've gotten this off another forum (it hasn't been solved yet), and thought you guys might enjoy this problem. I don't need it solved as it's not my...

    Started by derksheng‎, 08-08-2012 11:35 PM
    • Replies: 7
    • Views: 1,892
    08-09-2012, 10:20 AM Go to last post
  55. Difficulty correlating terminology with symbols.

    The book we are using for this class uses words instead of the symbols in some of the homework problems we are using. My question is: Is P(A...

    Started by Toaster Oven‎, 02-17-2006 12:00 PM
    • Replies: 2
    • Views: 5,156
    02-17-2006, 12:11 PM Go to last post
  56. Difficulty setting up double integrals for Joint Distributions

    I'm struggling to set up the correct range when calculating probabilities of joint distributions....anyone have any recommended reading or sites that...

    Started by hedgie‎, 09-27-2012 02:17 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 9,028
    09-30-2012, 03:24 AM Go to last post
  57. Direction please

    What statisics to I need to use work out the probability of seeing a dolphin given that it has been seen before? i.e. If it was seen once, will it...

    Started by Carolinew77‎, 03-27-2010 10:12 PM
    • Replies: 1
    • Views: 2,499
    03-28-2010, 06:25 PM Go to last post
  58. Dirichlet distribution

    I computed mean, variance and covariance of the Dirichlet distribution. To do so, I computed E, E and E. This is the first time I've dealt with...

    Started by Kiuhnm‎, 07-07-2013 05:09 AM
    dirichlet distribution
    • Replies: 2
    • Views: 1,422
    07-07-2013, 07:01 AM Go to last post
  59. Dirichlet distribution - moments (mean and variance)

    For a Dirichlet variable, I know the means and covariances, that is, E = \alpha_i/\alpha_0 Cov =\frac{ \alpha_i (\alpha_0 I -...

    Started by boot20‎, 10-28-2011 05:29 PM
    • Replies: 12
    • Views: 11,821
    02-14-2012, 10:56 AM Go to last post
  60. discrepancy between summed binomial probability and expected value

    Hi all. Im writing a program to calculate statistics for a tabletop game, and I'm confused by a discrepancy between a calculated expected value...

    Started by hoylemd‎, 06-11-2010 11:00 AM
    • Replies: 1
    • Views: 2,733
    06-11-2010, 12:35 PM Go to last post

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