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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: 30,193
    09-30-2005, 09:44 AM Go to last post
  1. Emperical Rule

    In finding the upper and lower bound with 95% confidence, I input numeric data and use descriptive stat on excel for mean and standard deviation....

    Started by aosunkoya‎, 10-21-2016 11:21 PM
    • Replies: 0
    • Views: 2,829
    10-21-2016, 11:21 PM Go to last post
  2. MSc Research Probability Survey

    Hi all, i'm currently in year 2 of a part-time MSc by research into Causal Bayesian Networks at York university; and as part of the study i'm...

    Started by Mark Balmer‎, 09-28-2016 01:52 PM
    • Replies: 0
    • Views: 1,405
    09-28-2016, 01:52 PM Go to last post
  3. Lightbulb Racing

    Hi all, I need some help with some statistical work: So, I am trying to understand how I can transform time into probability. I have 2...

    Started by Dedes‎, 10-03-2016 08:48 AM
    betting, normal distribution, probability, time frames
    • Replies: 0
    • Views: 2,100
    10-03-2016, 08:48 AM Go to last post
  4. Markov probability and stock return

    Suppose I have a stock that in in each timeperiod gives a return depending on the state s. Assume that the process starts in s_1 and gives the return...

    Started by JesperHP‎, 10-06-2016 07:38 AM
    • Replies: 0
    • Views: 1,707
    10-06-2016, 07:38 AM Go to last post
  5. Conditional Monthly Risk Calibration for a trading model

    Hi, I have a trading system with a portfolio of assets (long and shorts) with daily market returns. I want to overlay a risk management to my...

    Started by system2016‎, 10-13-2016 12:13 PM
    probability, risk calibration, trading system
    • Replies: 0
    • Views: 2,071
    10-13-2016, 12:13 PM Go to last post
  6. NFL Win Probabilities

    Check out this site that keeps track of all the probabilities of the big NFL stat models: http://trevorbischoff.com/2016-amos-nfl-predictions/

    Started by LeeBalto‎, 10-19-2016 04:45 AM
    • Replies: 0
    • Views: 3,584
    10-19-2016, 04:45 AM Go to last post
  7. Probibilities on opening hand at bridge

    Hi all bridge lovers! Bridge is a wonderful and very complex card playing game with thousands of books written about it. For those who do not...

    Started by peteritv‎, 10-25-2016 02:56 PM
    • Replies: 0
    • Views: 1,908
    10-25-2016, 02:56 PM Go to last post
  8. Roulette Probabilities

    Did it wrong... delete

    Started by Speakmore‎, 10-30-2016 06:53 PM
    • Replies: 0
    • Views: 2,922
    10-30-2016, 06:53 PM Go to last post
  9. Question Probability with Poker Hands, Please Help!

    Hi everyone, I joined the forum just to ask this question about one issue I'm having with probability. Your help is much appreciated. I already...

    Started by artife‎, 11-01-2016 09:21 PM
    • Replies: 0
    • Views: 2,400
    11-01-2016, 09:21 PM Go to last post
  10. Probability of observing mean difference/compute ranksum

    Hi everyone, would appreciate some help on these three questions. If possible with calculations so that I can understand more easily! Suppose the...

    Started by gossipgirl‎, 11-10-2016 03:07 PM
    mean difference, median difference, probability
    • Replies: 0
    • Views: 3,350
    11-10-2016, 03:07 PM Go to last post
  11. Resulting expected value of a bounded exponential pdf

    I need to determine the distribution function of an exponential random variable with mean 2, given that its outcome is larger than 2 and give the...

    Started by endlessend25‎, 11-14-2016 01:44 PM
    expected value, exponential, self-study
    • Replies: 0
    • Views: 2,548
    11-14-2016, 01:44 PM Go to last post
  12. The probability that I am missing only one tile

    Background I recently became fascinated (really!) in this probability problem. I have done quite a bit of work to figure out the answer...

    Started by snowguy‎, 11-14-2016 10:38 PM
    game, letters
    • Replies: 0
    • Views: 2,028
    11-14-2016, 10:38 PM Go to last post
  13. How to evaluate Mean and Variance of Min Function??

    Detail is Given in Image attach

    Started by imtiyazkhan‎, 11-15-2016 01:04 AM
    • Replies: 0
    • Views: 2,841
    11-15-2016, 01:04 AM Go to last post
  14. Sudokua problem using related binomial distribution

    It is given: If you succeed to solve a Sudoku with probability 0.4 and you try many times, how likely is it that you succeed twice before you...

    Started by endlessend25‎, 11-15-2016 07:51 AM
    binomial distribution, expected value, self-study
    • Replies: 0
    • Views: 2,550
    11-15-2016, 07:51 AM Go to last post
  15. Probability from sample and sub-groups

    Greetings! I was trying to determine probability of soccer tryout success. In Maryland, there are 5,300 boys in this group. There are 320 teams...

    Started by milan819‎, 11-15-2016 01:51 PM
    • Replies: 0
    • Views: 2,943
    11-15-2016, 01:51 PM Go to last post
  16. Two approaches to the same problem in probability

    Hello all I have this question: Two basketball players shoot the ball. The probability of the first one to succeed is 0.8, and the probability...

    Started by Yankel‎, 11-19-2016 03:01 AM
    • Replies: 0
    • Views: 2,566
    11-19-2016, 03:01 AM Go to last post
  17. Question about Merton's optimisation Model

    Hi there :) This is actually my very first thread on this forum and I hope it won't be the last and that I'll have the opportunity to discuss with...

    Started by Mim7‎, 11-22-2016 11:32 AM
    • Replies: 0
    • Views: 2,547
    11-22-2016, 11:32 AM Go to last post
  18. S1 Statistics question help! Majorly stuck

    Hi I have 3 statistics questions that I would like help with, 1. When Albert eats in a certain restaurant, he always eats either chicken or beef...

    Started by Mstainer18‎, 11-24-2016 02:18 PM
    a level, a level stats, probability, stat 1, statistics 1
    • Replies: 0
    • Views: 2,683
    11-24-2016, 02:18 PM Go to last post
  19. Computer game log normally distributed

    I'm playing a computer game and I want to boost the high score. I assume that attempts are independent (say, you do not improve by playing), and in...

    Started by endlessend25‎, 11-29-2016 03:45 PM
    independence, log, self-study
    • Replies: 0
    • Views: 2,220
    11-29-2016, 03:45 PM Go to last post
  20. statistic question help

    hello :) really need help with something. If person A makes an event once every 50 days, and person B makes an event once every 30 days (the...

    Started by netanel99‎, 12-02-2016 10:12 AM
    • Replies: 0
    • Views: 2,034
    12-02-2016, 10:12 AM Go to last post
  21. Probability Q help, uses combinatorics, Poisson-Distr and possibly Multinomal

    Place successively and independent of each other 20 particles into 10 boxes. Hereby, each of the 10 boxes is chosen with the same probability. a)...

    Started by bkc‎, 12-10-2016 03:05 PM
    poisson, probability
    • Replies: 0
    • Views: 2,156
    12-10-2016, 03:05 PM Go to last post
  22. Train car: probability to have a seat

    A train has got five train cars, each one with N seats. There are 150 passengers who randomly choose one of the cars. What is the probability that...

    Started by Mottler‎, 01-13-2017 01:39 PM
    • Replies: 0
    • Views: 1,894
    01-13-2017, 01:39 PM Go to last post
  23. Calculating the probability of finding pairs of n-letter substrings in DNA

    Hi, I've been struggling a bit with this problem: If I have a sequence of DNA made from letters ATGC which has a length of say 3571 letters,...

    Started by James1984‎, 12-21-2016 07:58 PM
    • Replies: 0
    • Views: 2,604
    12-21-2016, 07:58 PM Go to last post
  24. decile

    hi experts. I 'd like to ask about cluster analysis. to identify the group of customer that which group will have high potential to cancel the...

    Started by Kimudao‎, 05-27-2017 11:34 PM
    • Replies: 0
    • Views: 679
    05-27-2017, 11:34 PM Go to last post
  25. picking a present box with more than one characteristicss

    I have a probability problem which is simplified as following, I need to check if my solution is true: If there is a bag contains 20 of small...

    Started by Harith‎, 12-20-2016 06:11 AM
    • Replies: 0
    • Views: 2,199
    12-20-2016, 06:11 AM Go to last post
  26. Total and quadratic variation of a function

    Let f(x)= x2−3, for x<3, x2+3, for x≥3 I need to determine the total variation and the quadratic variation of f(x) on the interval . For...

    Started by endlessend25‎, 12-17-2016 10:23 AM
    function, variation
    • Replies: 0
    • Views: 2,701
    12-17-2016, 10:23 AM Go to last post
  27. Smile Hypothetical example of using probability to control emotions in business

    Imagine a company where there are two principals. The first person is the founder and owner of the company. The second person is nearly a partner...

    Started by jwoods76‎, 04-16-2017 05:23 PM
    • Replies: 0
    • Views: 760
    04-16-2017, 05:23 PM Go to last post
  28. Hypothesis testing - Type I and II error relationship needed

    Hi! Any idea about how to proof the inequality in formula 1 (see attatchment)? Thank you!

    Started by Lauralethia‎, 04-16-2017 06:49 PM
    • Replies: 0
    • Views: 804
    04-16-2017, 06:49 PM Go to last post
  29. Hypothetical draft lottery

    I was trying to devise an equitable MLB draft lottery system which reduces the benefit of "tanking" but heavily weighs record and has a slight...

    Started by nine16‎, 12-27-2016 12:18 PM
    • Replies: 0
    • Views: 2,732
    12-27-2016, 12:18 PM Go to last post
  30. What will be the Probability?

    If a treatment for cancer has 90% success rate, the remaining 10% die. If two patients come for treatment, what is the probability that one will die?

    Started by Dr.Faraz‎, 01-30-2017 01:34 PM
    probability estimate, probability question
    • Replies: 0
    • Views: 1,977
    01-30-2017, 01:34 PM Go to last post
  31. Probability of Horse Racing (odds aside)

    Hello In a 10 horse race - if I select two horses in the same race to run either 1st , 2nd or 3rd what are the odds of - one of the horses...

    Started by Mij‎, 01-29-2017 12:00 AM
    • Replies: 0
    • Views: 2,987
    01-29-2017, 12:00 AM Go to last post
  32. Simple Z score probability

    QUESTION: The monthly sales of mufflers follow the normal distribution with a mean of 1350 and a standard deviation of 250. The manufacturer...

    Started by subaru537‎, 01-29-2017 04:34 PM
    • Replies: 0
    • Views: 1,526
    01-29-2017, 04:34 PM Go to last post
  33. 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: 1,715
    01-29-2017, 06:32 PM Go to last post
  34. Pro / Stat Problems HELP!!!

    In many cases, you can model a binary communication system as follows. A 0 or 1 is chosen as the message and the transmitter sends a signal over a...

    Started by proo2k17‎, 01-29-2017 08:56 PM
    • Replies: 0
    • Views: 1,676
    01-29-2017, 08:56 PM Go to last post
  35. Warning: I know next to nothing about stats and have a question on sample selection

    Hi everyone, I am not sure if I can even articulate my problem clearly, but I need some feedback on whether my concern is valid. In order to...

    Started by oyvey‎, 01-06-2017 08:40 PM
    • Replies: 0
    • Views: 2,889
    01-06-2017, 08:40 PM Go to last post
  36. Maximum likelihood estimation for exponential distribution

    I would like to describe some gathered data for arrival process which seems not following Poisson distribution for people finding a job. The data...

    Started by karaks5‎, 01-07-2017 09:22 AM
    exponential distribution, maximum likelihood
    • Replies: 0
    • Views: 2,273
    01-07-2017, 09:22 AM Go to last post
  37. For the following example, is order meaningful or not?

    Consider a hypothetical example. There are 12 tickets for a documentary film and exactly 12 people to buy the tickets (one person can buy only one...

    Started by user1234‎, 01-19-2017 10:24 PM
    combination, combinatorics, permutation, probability
    • Replies: 0
    • Views: 1,593
    01-19-2017, 10:24 PM Go to last post
  38. Probability advice for a rpg

    Hello everyone ! The question I have will look a lot like a math problem, and I have to say, if I was a lath teacher, I would use problems like...

    Started by Yorkblack‎, 01-21-2017 10:23 PM
    • Replies: 0
    • Views: 1,758
    01-21-2017, 10:23 PM Go to last post
  39. NCA Office Pool Win Probability

    Hello, I run a small NCAA office pool website where folks make predictions about the outcome of each game in a 64-team tournament that consists of...

    Started by BustedBracket‎, 12-19-2016 02:12 AM
    code, ncaa, probability, tournament
    • Replies: 0
    • Views: 3,019
    12-19-2016, 02:12 AM Go to last post
  40. Question Probability

    (This is a question on probability, not a discussion on politics. Hate or love the President, I hope you all can respond with a mathematical...

    Started by vspinnet‎, 02-13-2017 07:27 AM
    • Replies: 0
    • Views: 1,855
    02-13-2017, 07:27 AM Go to last post
  41. A random variable's median and variance.

    -Part a) A box from 0 to 1 of height 1. What is its median ? Interpretation/Attempt: A random variable, X, is uniform, (So that its density is...

    Started by Kayl‎, 02-09-2017 05:43 AM
    probability mass function
    • Replies: 0
    • Views: 1,723
    02-09-2017, 05:43 AM Go to last post
  42. Combining multiple probabilistic weather signals with cumulative binary dist

    If I have a stable of separate, independent models (N = 19 of them) that are using different inputs to each generate a probabilistic forecast for...

    Started by dallasdallas‎, 02-08-2017 09:33 PM
    • Replies: 0
    • Views: 1,383
    02-08-2017, 09:33 PM Go to last post
  43. Arrival time

    Suppose there are five people, let t1 be the first arrival time which van be computed from min{X1,...,X5} t2 is the time of the next and so on. and...

    Started by karaks5‎, 01-17-2017 05:37 AM
    arrival time, exponential distribution
    • Replies: 0
    • Views: 2,064
    01-17-2017, 05:37 AM Go to last post
  44. Exclamation Probability of H/T Score AND F/T Score Being Specific Scores...

    Hi All, Just trying to answer something in my mind... If I had calculated (using poisson) the chances of various scores occurring in a football...

    Started by SMITH1988CJ‎, 05-30-2017 05:01 PM
    • Replies: 0
    • Views: 498
    05-30-2017, 05:01 PM Go to last post
  45. Exclamation Probability of Sampling Error Assistance

    Hello! I am working on a mini project and am stuck on the third question! I think it's how the question is phrased that is throwing me off..? I...

    Started by heidir1224‎, 05-30-2017 11:36 PM
    • Replies: 0
    • Views: 778
    05-30-2017, 11:36 PM Go to last post
  46. Sales Probability

    First post on this forum so I hope to explain my question appropriately. Our company issues catalogs to 3,000 customers. The products in this...

    Started by johnnyg‎, 09-29-2017 09:01 AM
    • Replies: 0
    • Views: 153
    09-29-2017, 09:01 AM Go to last post
  47. calculate intersection sets of cell clones in samples?

    Is it possible to calculate the probability of intersection sets in this setting? I have 44000 different cell clones in sample O, I donīt know how...

    Started by Rike133‎, 07-27-2017 06:58 AM
    • Replies: 0
    • Views: 367
    07-27-2017, 06:58 AM Go to last post
  48. Ranking products according to their price and probability of sale

    Hello! I have little knowledge of statistics/probability theory, so please bear with me. I was wondering about the following: I have a bunch...

    Started by salt‎, 09-27-2017 08:57 AM
    • Replies: 0
    • Views: 101
    09-27-2017, 08:57 AM Go to last post
  49. Measuring strentgh of competing teams

    The average number of goals scored per match by Team A when playing on home ground is 2.2 with a standard deviation of 1.3 while the average number...

    Started by Onditi‎, 10-10-2017 10:53 AM
    • Replies: 0
    • Views: 114
    10-10-2017, 10:53 AM Go to last post

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