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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: 30,221
    09-30-2005, 09:44 AM Go to last post
  1. Quantum Methods - Probability

    Hey yall, I'm taking a Quantum Methods class (Business Statistics) for my degree. Although I have taken Stats before, it was a year ago and I'm...

    Started by Standard Deviant‎, 10-19-2007 08:11 PM
    • Replies: 1
    • Views: 2,510
    10-20-2007, 02:14 AM Go to last post
  2. Generating function

    Hi, I'm stuck on this problem. If anyone could help, it would be really appreciated! Find the generating function for the negative binomial...

    Started by cornzox5342‎, 10-19-2007 08:21 PM
    • Replies: 0
    • Views: 2,446
    10-19-2007, 08:21 PM Go to last post
  3. Probabilities. Is this correct?

    In a study of fingerprints, an important quantitative characteristic is the total ridge count for the 10 fingers of the individual. Suppose that...

    Started by Wikkid1‎, 10-19-2007 07:07 AM
    • Replies: 0
    • Views: 4,704
    10-19-2007, 07:07 AM Go to last post
  4. Probability P(A|B)

    Ralph and Melissa watch lots of videos. But they have noticed that they don't agree very often. In fact, Ralph only likes about 10% of the movies...

    Started by threewingedfury‎, 10-18-2007 09:09 PM
    • Replies: 0
    • Views: 2,002
    10-18-2007, 09:09 PM Go to last post
  5. Urgently Need Help

    Hi, l'm stuck on these problems..need help. 1) Suppose yu have conversations with yo friend on 100 diff topics. On any given topic there's a...

    Started by statschallenged‎, 10-17-2007 12:57 AM
    • Replies: 2
    • Views: 2,500
    10-17-2007, 11:23 AM Go to last post
  6. probability for an event to happen

    hi, i have an event which occurs every 60 secs what's the probability of this to occur 15 secs after the beginning of a trial. what will be the...

    Started by german‎, 10-16-2007 08:06 PM
    • Replies: 0
    • Views: 2,628
    10-16-2007, 08:06 PM Go to last post
  7. 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: 9,049
    10-16-2007, 02:28 PM Go to last post
  8. Joint Prob Density Question

    I am working on a joint prob. density problem and thought that maybe someone may be able to point me in the correct direction. There is a bag of...

    Started by Robert J‎, 10-13-2007 09:59 PM
    • Replies: 2
    • Views: 2,996
    10-14-2007, 12:19 PM Go to last post
  9. Question probability. multiple choice, and rewriting tests

    for some reason i am drawing a blank on how to start these q's. i have looked through the book and there is no examples like these q's, stupid txt,...

    Started by some_gurly‎, 10-11-2007 03:18 AM
    • Replies: 0
    • Views: 3,573
    10-11-2007, 03:18 AM Go to last post
  10. Probability

    Hi, I feel that the answer is obvious but for some reason I feel like there is a trick in this question and I was just wondering if someone can help...

    Started by sp00ky‎, 10-09-2007 04:15 PM
    • Replies: 1
    • Views: 2,445
    10-09-2007, 04:22 PM Go to last post
  11. Help understanding Expectation of a sum

    Hi, I would like some help with understanding the properties of the expectation operator and the summation large sigma. Denote S as the large...

    Started by PeterVincent‎, 10-03-2007 03:33 PM
    • Replies: 2
    • Views: 5,322
    10-08-2007, 06:07 AM Go to last post
  12. probability of sexing human remains - any help?

    Hello everyone. I used to be about average with statistics a long time ago, but have come crashing down with lack of use for many years. I hope...

    Started by MightyCuinn‎, 10-07-2007 12:29 PM
    • Replies: 0
    • Views: 2,391
    10-07-2007, 12:29 PM Go to last post
  13. Can somebody please explain this solution to me?

    Hi there: I am preparing for an upcoming exam and have many practice problems I am going through. I have a hard time following the solution of the...

    Started by soriold‎, 10-07-2007 10:55 AM
    • Replies: 0
    • Views: 2,363
    10-07-2007, 10:55 AM Go to last post
  14. Statistics Problem (random variables)

    Here are some problems for you statistics masters http://www.utd.edu/~ammann/stat3360/node22.html let me know what you guys think...i went...

    Started by samhenric‎, 10-06-2007 11:24 PM
    • Replies: 0
    • Views: 2,770
    10-06-2007, 11:24 PM Go to last post
  15. Probability of Winning

    Hi, I'm trying to determine the probability of winning an event based on historical data, but I lack the sample size necessary for some...

    Started by Jared1983‎, 10-06-2007 02:09 PM
    • Replies: 1
    • Views: 2,058
    10-06-2007, 09:29 PM Go to last post
  16. Average Profit

    Hello, This question has been really confusing me and I was wondering if someone can help me out. The question is as follows: A large...

    Started by sp00ky‎, 10-06-2007 01:38 PM
    • Replies: 1
    • Views: 3,489
    10-06-2007, 06:11 PM Go to last post
  17. probability of liscense plate

    What is the probability of getting a license plate that has a repeated letter or digit if you live in a state where the scheme is three letters...

    Started by agclifto‎, 10-05-2007 05:57 PM
    • Replies: 1
    • Views: 12,985
    10-06-2007, 08:21 AM Go to last post
  18. Probability question

    Hi, I am having a real hard time answering this question and I was wondering if someone can give me some pointers and how to solve this problem: ...

    Started by sp00ky‎, 10-05-2007 03:51 PM
    • Replies: 3
    • Views: 3,583
    10-06-2007, 12:27 AM Go to last post
  19. probability tree

    Suppose 1 in 25 adults is afflicted with a disease for which a new diagnostic test has been developed. Given that an individual actually has the...

    Started by agclifto‎, 10-05-2007 05:51 PM
    • Replies: 0
    • Views: 4,466
    10-05-2007, 05:51 PM Go to last post
  20. Help me please (homework)

    -Suppose a measurement of A has been made over a large population -5% of those population are positive for A -if A is measured on the same subject...

    Started by cpalad‎, 10-02-2007 04:40 PM
    • Replies: 1
    • Views: 2,426
    10-03-2007, 05:23 AM Go to last post
  21. Probability Help

    Thread Removed

    Started by pink1‎, 10-02-2007 08:47 PM
    • Replies: 0
    • Views: 1,777
    10-02-2007, 08:47 PM Go to last post
  22. Committee

    5 member group A-E What is the Probability of drawing 3 slips from a hat randomly , the committee contains A but not B ? to make up a 3 person...

    Started by future4000‎, 09-27-2007 03:24 PM
    • Replies: 1
    • Views: 2,233
    09-27-2007, 03:37 PM Go to last post
  23. other expected value question

    I'm stumped on this question and i have an exam in a few days. any help would be appreciated A quality control plan for an assembly line involves...

    Started by themattler‎, 09-27-2007 08:19 AM
    • Replies: 0
    • Views: 3,397
    09-27-2007, 08:19 AM Go to last post
  24. expected value

    i'm stuck on a question i'm asked to show that if X is nonnegative integer valued R.V., then E = (sum from n=1 to infinity of P(X>=n) = (sum...

    Started by themattler‎, 09-27-2007 01:42 AM
    • Replies: 0
    • Views: 3,392
    09-27-2007, 01:42 AM Go to last post
  25. Good Probability Brainteaser Website?

    Hi, I'm pretty weak when it comes to probability brainteasers. Does anyone know some websites that have good brainteasers for me to practice on?...

    Started by ynotredrum‎, 09-26-2007 12:42 PM
    • Replies: 0
    • Views: 2,522
    09-26-2007, 12:42 PM Go to last post
  26. 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: 4,925
    09-26-2007, 09:29 AM Go to last post
  27. I have no idea.

    http://img.photobucket.com/albums/v646/supa69/tablegraph.jpg is a frequency distribution + histogram of reaction times. The Mean of this...

    Started by jamesmartinn‎, 09-25-2007 03:37 PM
    • Replies: 1
    • Views: 2,507
    09-25-2007, 10:24 PM Go to last post
  28. Help: strongly stationary process

    Let Z_t, t = ..., -2, -1, 0, 1, 2, ..., be a strictly stationary white noise process and let a, b, c be constants. Which of the following processes...

    Started by statstudent‎, 09-22-2007 09:50 PM
    • Replies: 0
    • Views: 3,765
    09-22-2007, 09:50 PM Go to last post
  29. Probablity of the ceiling falling?

    My friend asked me a question. "What is the probability of this ceiling falling?" I was puzzled. Then he replied that the probability is 1/2. Here is...

    Started by Jigar Gosar‎, 09-20-2007 03:10 PM
    • Replies: 9
    • Views: 4,079
    09-22-2007, 08:56 AM Go to last post
  30. Probability Two teams are playing a best of three series for the championship

    Probability Two teams are playing a best of three series for the championship Two teams are playing a best of three series for the championship....

    Started by future4000‎, 09-20-2007 11:10 PM
    • Replies: 1
    • Views: 2,702
    09-21-2007, 07:39 AM Go to last post
  31. Probability Help!!! AGAIN

    mean is 4300 standard deviation is 750 compute the probability that more than 5000 acres will be burned P(x > 5000) 5000-4300/750 ...

    Started by sharons‎, 09-15-2007 12:14 AM
    • Replies: 3
    • Views: 4,231
    09-21-2007, 07:16 AM Go to last post
  32. determine underlying distribution

    Dear all, I am working on this problem and i want to determine what is the underlying distribution in this experiment. I would appreciate if you...

    Started by sassql‎, 09-19-2007 10:09 PM
    • Replies: 0
    • Views: 2,592
    09-19-2007, 10:09 PM Go to last post
  33. please help me with this stuff

    I have been working on this for 2 weeks and I really need help guys! I see everyone has read my stuff but nobody has posted anything. I have used the...

    Started by Aingeal34‎, 09-19-2007 04:41 PM
    • Replies: 0
    • Views: 2,596
    09-19-2007, 04:41 PM Go to last post
  34. Poisson Help

    I am having difficulty figuring out these two problems. Please Help!!! 1.) If 3% of the electric bulbs are defective, find the probability that...

    Started by krmereness‎, 09-18-2007 10:06 PM
    • Replies: 0
    • Views: 2,565
    09-18-2007, 10:06 PM Go to last post
  35. Central Limit Theorem

    It has been determined that the average cost to develop a 30 second commericial is 20,000 with a standard deviation of 3000 What is the...

    Started by sharons‎, 09-18-2007 07:20 AM
    • Replies: 0
    • Views: 2,619
    09-18-2007, 07:20 AM Go to last post
  36. Talking Could someone please help me and answer my question?????

    I posted the entire question earlier in the thread and I would greatly appreciate it if someone would help me and show me how to do the problem step...

    Started by Aingeal34‎, 09-17-2007 11:38 PM
    • Replies: 0
    • Views: 1,795
    09-17-2007, 11:38 PM Go to last post
  37. Question Probability question

    Hello, The last time I saw a Statistics class was about 30 year go so forgive me for submitting such an elementary question. DATA: ROW A: 0...

    Started by pakoppan‎, 09-17-2007 11:16 AM
    • Replies: 0
    • Views: 1,989
    09-17-2007, 11:16 AM Go to last post
  38. Probability - Im new at this

    Here is the question: The probability that petrol pump equipment at the service station becomes damaged by fuel contamination and requires the...

    Started by muzby‎, 09-16-2007 02:31 PM
    • Replies: 0
    • Views: 2,332
    09-16-2007, 02:31 PM Go to last post
  39. 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: 3,543
    09-16-2007, 09:38 AM Go to last post
  40. How did I get this answer?

    What is the probability of getting 10 heads in 20 flips of a fair coin? n = 20 x = 10 p = 0.5 I plug in the numbers into my ti-84 and get...

    Started by RyanJ‎, 09-13-2007 02:22 PM
    • Replies: 1
    • Views: 3,608
    09-13-2007, 02:49 PM Go to last post
  41. Question i need help!

    this is my first year taking a stats class and i dont understand this question if someone could explain how to do it to me that would be greatly...

    Started by britishbrat13‎, 09-12-2007 05:12 PM
    • Replies: 1
    • Views: 2,376
    09-13-2007, 01:48 AM Go to last post
  42. Variance of stochstic variables

    Hi, I have a problem and I cannot find the answer in any textbook or on the internet. The problem is the following. I have two variables, (X &...

    Started by Ozzy77‎, 09-11-2007 03:29 AM
    • Replies: 2
    • Views: 2,404
    09-12-2007, 03:30 AM Go to last post
  43. Smile Conditional Probability [HELP]

    I = innocent, G= guilty P(I) = 1, P(G) = 0 Conditional Probability Test Results: P(+ | I ) =0, P(+ | G ) = 1 Find P(G | +) in other words...

    Started by cheri3‎, 09-07-2007 07:41 PM
    • Replies: 5
    • Views: 2,531
    09-11-2007, 06:02 PM Go to last post
  44. Requested Probability-Help

    P(Z>-2.576) is it .5000 + .4951 =.9951

    Started by sharons‎, 09-10-2007 09:55 PM
    • Replies: 1
    • Views: 2,946
    09-11-2007, 04:02 PM Go to last post
  45. keno problem

    In a keno game 20 numbers are picked.We write those numbers down.What is the probability of those original 20 numbers that we wrote down coming up...

    Started by myvette‎, 09-11-2007 11:45 AM
    • Replies: 1
    • Views: 2,937
    09-11-2007, 11:59 AM Go to last post
  46. circuit failure

    A message is transmitted using a binary code of 0's and 1's. Each transmitted bit (0 or 1) must pass through three relays before reaching a receiver....

    Started by roldy‎, 09-10-2007 11:26 PM
    • Replies: 1
    • Views: 4,437
    09-11-2007, 12:17 AM Go to last post
  47. Probability

    Of 1037 ppl who came to the blood bank, 330 ppl had high blood pressure. Estimate the probability that the next person who comes into the blood bank...

    Started by sharons‎, 09-04-2007 07:34 PM
    • Replies: 2
    • Views: 2,399
    09-06-2007, 10:34 AM Go to last post
  48. Question from a novice

    I have not studied statistics in college, but I have a question that is probably a simple one. I have had this discussion with my friends, but we...

    Started by lesterman‎, 09-06-2007 08:22 AM
    • Replies: 1
    • Views: 2,357
    09-06-2007, 09:31 AM Go to last post
  49. Bayes Rule Problem

    Ok, I'm trying to learn Baye's Rule, but I'm very new to it. I understand the rule to say P(A given B) = P(B given A) x P(A) / Assuming that...

    Started by newtostats‎, 08-31-2007 07:02 PM
    • Replies: 1
    • Views: 2,703
    09-04-2007, 09:33 AM Go to last post
  50. Probability Help!!!

    I need help. The probability that you will pass a test is .74. what is the probability that you will fail the test? Is it .26?

    Started by sharons‎, 09-02-2007 09:55 PM
    • Replies: 1
    • Views: 2,359
    09-03-2007, 03:24 AM Go to last post
  51. I don't know where to start.

    Hi, I need to know how to figure out a question, I am hoping that someone can help me. The question is: there are 3 boxes that generate random...

    Started by whitneyb‎, 08-29-2007 03:30 PM
    • Replies: 0
    • Views: 2,337
    08-29-2007, 03:30 PM Go to last post
  52. Probability of 4 byte random occuring in 64K

    I would like to replace the NULLs in some compressed data with a sequence of bytes. The maximum size of the data is 64K bytes (each byte is a...

    Started by gmrobert‎, 08-29-2007 12:40 PM
    • Replies: 0
    • Views: 2,550
    08-29-2007, 12:40 PM Go to last post
  53. Erlang-k where k is Negative Binomial

    I have a stochastic process where calls have exponential interarrival times with parameter L and I have a stationary probability, p, that a call is...

    Started by Bob Gremley‎, 08-28-2007 10:35 AM
    • Replies: 0
    • Views: 2,645
    08-28-2007, 10:35 AM Go to last post
  54. Confidence Interval HELP Plz

    Plz Help!!!!!!! I can't figure this out Confidence interval for the population mean: Use of the t distribution A corporation that maintains a...

    Started by wengermel‎, 08-20-2007 05:09 PM
    • Replies: 1
    • Views: 5,010
    08-21-2007, 11:13 AM Go to last post
  55. help

    I am having a difficult time understanding probability. Here are some questions I am trying to figure out. 1.) Several students are unprepared for...

    Started by JELEWIS01‎, 08-16-2007 05:50 PM
    • Replies: 1
    • Views: 4,526
    08-17-2007, 08:06 AM Go to last post
  56. Need help with z-test for significance

    Below is the table i have that i want to test significance on. Total Status YES NO DONT KNOW 48 N 93.92 1.85 4.23...

    Started by stumbling‎, 08-16-2007 08:29 AM
    • Replies: 1
    • Views: 3,224
    08-16-2007, 09:44 AM Go to last post
  57. consectutive wins in 10,000 events

    Hello, Thanks in advance for your help. My question is related to probability. I think I know the answer, but I would like confirmation on my...

    Started by Bjorn‎, 08-04-2007 10:29 AM
    • Replies: 1
    • Views: 2,387
    08-13-2007, 03:40 PM Go to last post
  58. what are the odds of this! please help!

    Ok, So I play poker, and its been an awfully dry night of cards, at one point it feels so bad I start logging it and see that before I quit, I was...

    Started by Shaud‎, 08-05-2007 10:46 PM
    • Replies: 1
    • Views: 2,534
    08-13-2007, 12:56 PM Go to last post
  59. Help!

    Hey! I have repeat exams coming up now in a couple of weeks and need some help in different questions! If i gave you my email address would you be...

    Started by xxalaine44xx‎, 08-12-2007 08:57 AM
    • Replies: 0
    • Views: 1,766
    08-12-2007, 08:57 AM Go to last post
  60. PLEASE check~ Q2 of my assignment..

    I realli wana get all these correct. so...if anyone can also check my answers for question 2... Urn 1 contains 1 red, 3 green and 1 blue ball Urn...

    Started by pluto‎, 08-08-2007 08:53 PM
    • Replies: 0
    • Views: 1,972
    08-08-2007, 08:53 PM Go to last post

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