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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. Smile Probability

    Question : Jane wants to do her MSc in statistics. She appliesa to two universities. Assume the acceptance rate at University A is 25% and at...

    Started by edwim12‎, 09-06-2005 08:49 PM
    • Replies: 4
    • Views: 4,449
    10-15-2006, 05:57 AM Go to last post
  2. Probability Question

    A mortgage company knows that 8% of its loan recipients default within the first five years. To be profitable the company must have no more than 25...

    Started by pla0812‎, 09-19-2005 10:49 AM
    • Replies: 4
    • Views: 3,283
    04-20-2006, 08:52 PM Go to last post
  3. Question mathematical expectation

    A despondent math professor is traveling to Las Vegas to bet his entire life savings, $20,000, on one roll of the (two) dice. If the total is 7 or...

    Started by summertigger‎, 12-18-2005 09:16 PM
    • Replies: 4
    • Views: 4,788
    04-27-2006, 10:47 AM Go to last post
  4. Unhappy still having difficulty after reading previous threads

    Regarding Question #2 In grading apples into "A","B" and "C" a large orchard uses weights to distinguish apples. Any apple weighing more than...

    Started by klewis‎, 02-14-2006 03:01 PM
    • Replies: 4
    • Views: 3,479
    02-15-2006, 02:29 PM Go to last post
  5. This is not homework. Just for entertainment.

    My gaming clan was having a dispute over some voting procedures and I posed a question for them to answer. If they get it right I would donate an...

    Started by Toaster Oven‎, 02-24-2006 01:12 PM
    • Replies: 4
    • Views: 3,063
    02-27-2006, 07:57 AM Go to last post
  6. Please Help

    I am stuck on the following question for my coursework. A factory produces metal rods. One project requires that the rods are 60 + or - 0.2 cm...

    Started by LindaM‎, 03-12-2006 07:04 PM
    • Replies: 4
    • Views: 2,147
    03-12-2006, 07:33 PM Go to last post
  7. Help on probability

    Probability of 12 defects in one batch = 0.3060 If two more batches are produced, find the probability that all 3 batches will contain at least 12...

    Started by davidfsmith‎, 04-04-2006 08:23 AM
    • Replies: 4
    • Views: 2,693
    04-05-2006, 10:01 AM Go to last post
  8. I never knew calculating probability was so difficult!

    I'm having a really hard time wrapping my mind around these questions! I think I might be thinking of this too simplistically. If someone could...

    Started by maggie2‎, 04-09-2006 03:57 PM
    • Replies: 4
    • Views: 3,203
    04-12-2006, 08:36 AM Go to last post
  9. Cool Permutations

    I'm having trouble with this one: In how many different was can the letters of the word "BLUEBERRY" be arranged? I got 7,560? Is that what...

    Started by GeorgeBurns‎, 04-23-2006 12:04 PM
    • Replies: 4
    • Views: 3,457
    04-25-2006, 02:12 PM Go to last post
  10. Pair multiple dice

    Help I have developed a mental block, and despite searching I cannot find any information about how the following works. My problem is...

    Started by NoobSaibot‎, 06-12-2006 09:20 PM
    • Replies: 4
    • Views: 4,176
    06-17-2006, 11:04 PM Go to last post
  11. identifying the distribution of a data set

    Dear all I am creating a software that is reading tcp packets from a link. I have the following information available: size of the packet: ...

    Started by alinaqvi90‎, 08-10-2006 09:47 PM
    • Replies: 4
    • Views: 5,250
    08-16-2006, 10:58 PM Go to last post
  12. Newbie Really Needing Help

    I am having a problem with one of my assignments for my class, and for the life of me, I cannot solve it. Any help would be much appreciated! Here...

    Started by Leper Messiah‎, 08-29-2006 08:59 PM
    • Replies: 4
    • Views: 2,460
    08-29-2006, 09:35 PM Go to last post
  13. Need Help Please

    There is a group of 200 college students, 138 are taking psychology, 115 are taking sociology, and 91 are taking both. a.) How many of the...

    Started by Leper Messiah‎, 09-10-2006 09:24 PM
    • Replies: 4
    • Views: 5,344
    09-10-2006, 10:48 PM Go to last post
  14. Probability Question

    I am having problems with this problem. What forumula would I use, and how would I do this problem. A product has five ways in which it might...

    Started by hiluxsurf‎, 09-19-2006 08:36 AM
    • Replies: 4
    • Views: 2,214
    09-19-2006, 09:25 AM Go to last post
  15. p(x)=0, even though x can occur !

    For a continuous distribution: p(x)=0, even though x can occur. I can understand this statement, since I can imagine that there is an infinite number...

    Started by salanr6‎, 09-21-2006 10:11 AM
    • Replies: 4
    • Views: 2,916
    09-24-2006, 10:39 AM Go to last post
  16. probability

    what is hypergeometric experiment?

    Started by brunett‎, 09-22-2006 11:10 PM
    • Replies: 4
    • Views: 2,519
    09-24-2006, 09:38 AM Go to last post
  17. Coin A Coin B

    Coin A is flipped 3 times and coin B 4 times. What is the probability that the number of tails obtained from flipping the 2 fair coins is the same?

    Started by Whitney‎, 10-04-2006 11:15 PM
    • Replies: 4
    • Views: 2,760
    10-11-2006, 11:11 AM Go to last post
  18. probability confusion

    Hello everyone!!! I don't know if im experiencing a brain-fart these days, but I just can't figure this out. Here's a problem. I have more like...

    Started by speth‎, 10-27-2006 11:54 AM
    • Replies: 4
    • Views: 4,716
    10-31-2006, 10:34 PM Go to last post
  19. Assesing normality - Amateur question

    Hi everybody, (First of all, excuse my poor english : It's not my native tong). I'm working for myself on a computer programm which will deal...

    Started by OlivierT‎, 11-04-2006 10:34 AM
    • Replies: 4
    • Views: 4,147
    01-21-2008, 11:11 AM Go to last post
  20. question about probability

    Imagine that I have a bag filled with 200 milions of small balls of different colors (each color has the same number of balls). Furthermore, a ball...

    Started by faustino‎, 11-08-2006 09:29 AM
    • Replies: 4
    • Views: 2,853
    11-13-2006, 06:42 AM Go to last post
  21. I'm very confused...(Normal Distribution)

    Hi people...I really should of come here sooner to try and ask for help, but I just kept letting myself sink deeper and deeper... Now I have some...

    Started by DarrenCax‎, 11-20-2006 02:30 AM
    • Replies: 4
    • Views: 3,183
    11-21-2006, 11:14 PM Go to last post
  22. Roulette Question

    I am really stuggling with this....please help The game of American Roulette is played on a whele which consists of 38 slots, each with its...

    Started by cannoli‎, 01-16-2007 12:00 PM
    • Replies: 4
    • Views: 3,152
    01-17-2007, 12:39 PM Go to last post
  23. Complements, Unions, and Intersections

    Help!:shakehead In a market research survey participants were asked if they put ketchup directly on their fries or along side. 26% of men said...

    Started by tmwawa‎, 01-28-2007 12:09 PM
    • Replies: 4
    • Views: 4,210
    01-28-2007, 01:57 PM Go to last post
  24. help

    A random sample of selected from a normal population

    Started by liverpool1890‎, 04-17-2007 04:18 PM
    • Replies: 4
    • Views: 2,924
    04-19-2007, 04:23 PM Go to last post
  25. probability of consumption

    could someone let me know what i'm doing wrong? A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet...

    Started by rzum‎, 06-08-2007 02:13 PM
    • Replies: 4
    • Views: 24,492
    06-13-2007, 11:06 AM Go to last post
  26. Finding the probability, given only the mean

    Hello, I am in desperate need for assistance. A tutee of mine had a problem with probability. Here is the question: According to J. D. Powers...

    Started by QKTD7‎, 06-11-2007 02:54 PM
    • Replies: 4
    • Views: 6,119
    06-13-2007, 02:22 PM Go to last post
  27. Lightbulb Please help with a simple problem

    Hi, I've been working on an extra credit problem, which seems pretty easy but I can't figure it out. It's only 2 points, but any help would be...

    Started by rocco‎, 06-19-2007 01:30 PM
    • Replies: 4
    • Views: 2,857
    06-28-2007, 01:42 AM Go to last post
  28. How to approximate a non-standard pdf?

    Hi All, I've got a bit of a techincal question here that I would greatly appreciate some guidance on. Although I have some experience with...

    Started by mike-g2‎, 07-23-2007 05:58 PM
    • Replies: 4
    • Views: 3,518
    07-25-2007, 11:49 AM Go to last post
  29. Desperately needing homework help!

    I tried the math lab at the local college and the statistics professor was as stumped as I was! A videotape has an average of one defect every...

    Started by samiam619‎, 07-24-2007 02:41 PM
    • Replies: 4
    • Views: 4,801
    07-30-2007, 04:02 PM Go to last post
  30. Conjunction of n hypothesis

    Ciao all, :wave: I have a conjunction of n non-independant hypothesis: h1 and h2 and .... and hn. I want to calculate the probability of...

    Started by aldebaran2‎, 09-13-2007 04:08 AM
    • Replies: 4
    • Views: 3,569
    09-16-2007, 09:38 AM Go to last post
  31. Convergence in probability

    Hi, Can you please help me with the following question? Any hints, ideas would be much appreciated. Suppose that the sequence Xn converges to...

    Started by alien‎, 09-24-2007 05:50 PM
    • Replies: 4
    • Views: 4,954
    09-26-2007, 09:29 AM Go to last post
  32. Scrabble probability question?

    I have a question for you probability and statistics experts out there. At the beginning of scrabble to determine who starts, each person (in this...

    Started by blahb‎, 10-04-2007 01:11 PM
    • Replies: 4
    • Views: 9,145
    12-21-2007, 04:22 PM Go to last post
  33. Red face variance of probabilities

    A variance is the amount of spread in a distribution, right? I keep coming up with a huge number for the variance and I'm not sure if this number...

    Started by frustratedwstats‎, 10-11-2007 12:41 PM
    • Replies: 4
    • Views: 3,741
    06-13-2008, 01:39 AM Go to last post
  34. Some questions on Hypothesis, poissson and normal dist...try it

    Question 1 Millions of suburban commuters are finding railroads to be a convenient, time-saving, less stressful alternative to the automobile. While...

    Started by Shekhar‎, 10-22-2007 06:45 AM
    • Replies: 4
    • Views: 4,085
    03-03-2008, 01:53 PM Go to last post
  35. Run Rudolph, Run!

    Greetings. I was hoping someone could help with a problem. I design games as a hobby and this one is way beyond my basic understanding of...

    Started by flogger‎, 01-16-2008 03:50 PM
    • Replies: 4
    • Views: 3,090
    01-17-2008, 10:57 PM Go to last post
  36. HELP! using continuity correction factor

    Hi, I have been having issues with this question: An airline company knows that 8% of its passengers will not show up for their flight. A plane...

    Started by katherine1‎, 02-15-2008 03:51 PM
    • Replies: 4
    • Views: 7,299
    03-26-2008, 08:26 AM Go to last post
  37. Probability Problem Question

    Hello all, I'm struggling quite mightily with this one problem (embarrassing to me once you see how simple it is). I've been trying to figure it...

    Started by Kanekutter05‎, 02-21-2008 11:39 AM
    • Replies: 4
    • Views: 2,484
    02-21-2008, 06:00 PM Go to last post
  38. Probability Problem

    Hi all, I have been trying to come up with the correct answer for part c) of this question with no luck. A gumball dispenser has 38 orange...

    Started by biff44‎, 02-22-2008 01:42 PM
    • Replies: 4
    • Views: 5,672
    02-22-2008, 04:09 PM Go to last post
  39. Z Scores Probabilty...Can anyone help?

    Hey, Here is the question, I need some serious help!!!! A soft drink machine can be regulated so that it discharges and average of per cup. If...

    Started by spoochie1‎, 03-03-2008 08:18 PM
    • Replies: 4
    • Views: 2,155
    03-10-2008, 08:51 AM Go to last post
  40. Four-Sided Die Question

    Consider the trial on which a 4 is first observed in successive rolls of a four-sided die. Let A be the event that 4 is observed on the first trial....

    Started by xcowrnx‎, 03-12-2008 01:47 PM
    • Replies: 4
    • Views: 5,011
    05-05-2008, 01:12 PM Go to last post
  41. Question Elevator probability question

    This morning, when I walked into the elevator, I had this question in my mind. Five people walk into an elevator at Ground level. There are 17...

    Started by oddsnevens‎, 04-17-2008 02:08 PM
    • Replies: 4
    • Views: 8,012
    04-18-2008, 02:27 PM Go to last post
  42. chess probability question

    Hello, This question is taken from Ross' a first course in probability chapter 2. It is question 17. Here it is: If 8 rooks are randomly...

    Started by dmdmdm678‎, 05-04-2008 05:17 PM
    • Replies: 4
    • Views: 8,706
    05-06-2008, 12:28 PM Go to last post
  43. quadtrat counts

    hi, maybe someone can help with the following problem: i counted quadrat of a grid with or without incidents. the grid covered a periphery area...

    Started by gimoya25‎, 05-13-2008 11:09 AM
    • Replies: 4
    • Views: 2,768
    05-14-2008, 03:43 AM Go to last post
  44. unknown statistics

    Hi everyone I'm trying to find out what distribution two statistics have and I was wondering if someone could help me out. :) The first statistic...

    Started by sawyer‎, 05-28-2008 12:34 PM
    • Replies: 4
    • Views: 3,041
    05-29-2008, 06:05 PM Go to last post
  45. Golf Probability Again

    This problem is really bothering me cause I can't figure it out at all...so I'm gonna try reposting it if that's ok: Harry is an employee at a...

    Started by DAI&DF‎, 06-02-2008 07:15 AM
    • Replies: 4
    • Views: 1,987
    06-02-2008, 03:44 PM Go to last post
  46. Question Help with finding indicated probability

    I have worked on this problem now for the whole entire day, and still don't understand what I am doing wrong. Can someone help me? The problem...

    Started by teneclady201‎, 07-10-2008 05:40 PM
    • Replies: 4
    • Views: 29,075
    07-13-2008, 06:04 PM Go to last post
  47. Question Analyzing a difference in conditional probabilities

    Hi all, I would like to compare the conditional probabilities of an animal behaving in a certain way at two different treatment types. Say the...

    Started by jhunter‎, 08-04-2008 07:03 PM
    • Replies: 4
    • Views: 2,648
    08-14-2008, 12:33 PM Go to last post
  48. discrete approximation of continuous probabilty

    not sure how to state this, but... assume I want to randomly generate some discrete numbers in the range 1...k but i want them to be generated...

    Started by joep‎, 08-21-2008 01:55 PM
    • Replies: 4
    • Views: 3,772
    08-21-2008, 03:59 PM Go to last post
  49. Joint distribution of noncentral t statistics

    Hi, I need to compute a probability which is described by the joint distibution of 2 non-central t statistics. If somemody knows references...

    Started by Bel Duarte‎, 08-28-2008 08:56 AM
    • Replies: 4
    • Views: 2,470
    09-03-2008, 10:30 AM Go to last post
  50. Poisson with events per week for calculating probability per Quarter?

    Hi all, I have a question regarding the Poisson distribution. (I searched the forum before creating this post, I couldn't find a similar post) ...

    Started by RayDaniel‎, 09-05-2008 06:29 AM
    • Replies: 4
    • Views: 5,205
    09-05-2008, 11:31 AM Go to last post
  51. please check

    X) How many different eleven-letter words (not necessairly pronounceable or meaningful) can be made from the letters in the word MISSISSIPPI? ANS:...

    Started by jamesmartinn‎, 09-15-2008 09:06 AM
    • Replies: 4
    • Views: 2,424
    09-20-2008, 12:20 PM Go to last post
  52. independence

    p(a) = 0.1 and p(b) = 0.3 : assume these events are independent 1) prob of neither events occuring? I got 0.97 2) prob of at least one event...

    Started by jamesmartinn‎, 09-21-2008 08:53 PM
    • Replies: 4
    • Views: 2,899
    09-22-2008, 10:04 AM Go to last post
  53. Rolling a pair of dice.

    http://www.cam.cornell.edu/~sharad/math407/midterm_sol.pdf I don't understand 3b. Why isn't the E1 union with E2 just sum of E1 and E2? I think...

    Started by iamsevenup‎, 09-29-2008 06:03 PM
    • Replies: 4
    • Views: 3,013
    09-30-2008, 10:25 AM Go to last post
  54. Probability Distribution

    Hello: A novice statistician here. Hopefully someone can help me with what I expect is an easy question. I'm trying to create a probability...

    Started by kgs‎, 10-07-2008 06:41 PM
    • Replies: 4
    • Views: 2,529
    10-28-2008, 01:12 PM Go to last post
  55. Transformations of Random Variables

    Suppose X ~ U(-1,2). find the density of X^2 My soln so far: f(x)x = (1/3, -1<x<2. 0 elsewhere) My teacher tells us to find the CDF, then...

    Started by jamesmartinn‎, 10-09-2008 05:13 PM
    • Replies: 4
    • Views: 2,813
    10-12-2008, 05:06 PM Go to last post
  56. Infinite sum

    Hi All- It has been a few years since my last calc class and now I am taking a course in mathematical stats. I have the discrete data pmf:...

    Started by B_Miner‎, 10-11-2008 08:17 PM
    • Replies: 4
    • Views: 3,112
    10-12-2008, 02:06 PM Go to last post
  57. risk

    Hi, sorry if may be a stupid question, but I have a such an elementary doubt: let you suppose that a certain distribution (for example triangular:...

    Started by giordy‎, 10-18-2008 02:44 AM
    • Replies: 4
    • Views: 2,520
    10-18-2008, 12:50 PM Go to last post
  58. How to apply a distribution and derive a failure rate?

    please excuse me for my newbie question. certain factors influence the power requirements for my system which comprises of several components. i...

    Started by ChootarLaal‎, 10-27-2008 10:28 AM
    • Replies: 4
    • Views: 4,956
    10-27-2008, 01:18 PM Go to last post
  59. Not a problem, but an opinion about a book

    I am currently taking a class called Probability/Math Statistics I. We are using a book called Probability and Statistics with Applications. It is...

    Started by pensfan10‎, 10-30-2008 04:22 PM
    • Replies: 4
    • Views: 2,102
    11-01-2008, 10:39 AM Go to last post
  60. Can anybody help me with this probability question?

    helpneeeded

    Started by sahilkthr‎, 11-05-2008 03:42 PM
    • Replies: 4
    • Views: 2,309
    11-06-2008, 02:24 AM Go to last post

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