1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
    05-10-2017
    Views:
    1,960
+ Post New Thread
Page 37 of 91 FirstFirst ... 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 87 ... LastLast
Threads 2161 to 2220 of 5454

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: 30,399
    09-30-2005, 09:44 AM Go to last post
  1. To use binomial or not to use binomial?

    "For fans who visit the celebrity facebook page, 15% will click the ad on the page. Each click on the ad link will generate a $0.05 income. For a...

    Started by cys920622‎, 02-29-2012 04:21 AM
    • Replies: 3
    • Views: 1,560
    02-29-2012, 05:49 AM Go to last post
  2. Two questions: one about bias/MSE and one about confidence intervals

    1. Y1, Y2, .... , Yn are a random sample from the Poisson distribution with parameter (mean) lambda > 0. Show that the square root of the sample...

    Started by APOCooter‎, 02-28-2012 05:56 PM
    • Replies: 1
    • Views: 2,000
    02-29-2012, 05:42 AM Go to last post
  3. Probability of a team making the finals

    Hi, I am trying to find how to calculate the probability of "x" number of events happening within "y" opportunities. However each opportunity has...

    Started by listmanager‎, 02-28-2012 08:00 PM
    probability, probability distributions, probability help, probability question, probability theory
    • Replies: 7
    • Views: 2,028
    02-28-2012, 09:36 PM Go to last post
  4. Request for help developing a commercial solution

    Firstly, I apologise if I am in the wrong place. In a business context we need to produce a model to help planning tasks. We are a small commercial...

    Started by DAvidA1‎, 02-28-2012 12:02 PM
    • Replies: 0
    • Views: 1,333
    02-28-2012, 12:02 PM Go to last post
  5. A self study question for extreme probability....Gaming-Cards.

    No, this does not have to do with any current games on the market.... I have a unique question for anyone that can explain it to me. I'm a bit of a...

    Started by myrlin2k‎, 02-28-2012 11:28 AM
    • Replies: 3
    • Views: 1,724
    02-28-2012, 11:54 AM Go to last post
  6. Question decimal answer need for probability

    Happy Meal Problem: McDonalds offers a little toy with its happy meals. They have 5 different toys and each toy has the same probability of appearing...

    Started by sasori‎, 02-27-2012 10:54 PM
    • Replies: 9
    • Views: 3,260
    02-28-2012, 08:39 AM Go to last post
  7. Moment Generating Function of Z

    Let X1,X2,... be a sequence of iid uniform random variables in , i.e. Xi ∼ U(0, 1) Let N be a random number which has the probability mass...

    Started by icedtea138‎, 02-28-2012 08:38 AM
    • Replies: 0
    • Views: 1,931
    02-28-2012, 08:38 AM Go to last post
  8. Drug Reaction Probability

    In a clinical test of the drug Viagra, it was found that 4% of those in a placebo group experienced headaches. Assuming that the same 4% rate applies...

    Started by kelly g‎, 02-27-2012 09:32 PM
    • Replies: 6
    • Views: 6,284
    02-27-2012, 11:15 PM Go to last post
  9. I need help with homework please.

    The teacher just kind of highlights the basics of it and tells us to read the chapter but the book makes absolutely no sense whatsoever. If someone...

    Started by anangelofastar‎, 02-27-2012 10:00 PM
    • Replies: 1
    • Views: 5,197
    02-27-2012, 10:20 PM Go to last post
  10. Probability (compound event)

    Question: the event A&B are such that P(A)= x+.2 P(B)= 2x + .1 P(AnB)=x a) Given that P(AuB)= .7 find the value of x OK I DON'T EXPECT ANYONE...

    Started by cushane‎, 02-27-2012 06:07 PM
    • Replies: 12
    • Views: 2,708
    02-27-2012, 07:56 PM Go to last post
  11. Probablity with mean and standard deviation

    Assume that birthweights are normally distributed with a mean of 3400 g and a standard deviation of 700 g. Find the probability of a...

    Started by Theresa‎, 02-27-2012 07:09 PM
    • Replies: 1
    • Views: 2,487
    02-27-2012, 07:16 PM Go to last post
  12. Mysterious probability problem

    t's a case from the book talks about Otitis media- infection of the middle ear- in infants population. the number of sample is 2500 infants. i/m ...

    Started by yoha‎, 02-27-2012 01:41 PM
    • Replies: 0
    • Views: 1,718
    02-27-2012, 01:41 PM Go to last post
  13. Empirical Rule of 68-95-99.7 vs. Corresponsing probability from Z-table

    The Empirical Rule states that "Assuming the population exhibit a normal (bell-curved) distribution, about 68.27% of the values lie within 1 standard...

    Started by suewitch‎, 02-27-2012 11:52 AM
    • Replies: 2
    • Views: 4,485
    02-27-2012, 01:17 PM Go to last post
  14. Exclamation Probability for functional combination of normal distributed random variable

    Hey folks, i am searching for a method to get the probability of a functional combination of normal distributed random variables, here is an...

    Started by Greyman‎, 02-25-2012 04:41 PM
    • Replies: 12
    • Views: 3,611
    02-27-2012, 12:43 PM Go to last post
  15. ratio data and chi-squared test

    Hello I have a data composing of S and W type. Originally I used paired t-test to examine if S>W. (H0: S>W, Ha: S=<W, one-tailed) Now I...

    Started by helenekuo‎, 02-27-2012 12:49 AM
    • Replies: 0
    • Views: 1,654
    02-27-2012, 12:49 AM Go to last post
  16. Can anybody correct me please?!!

    Here is a question that I came across and I answered it, but Im not sure about it. Three drugs are selected at random, and each is categorized as...

    Started by yoha‎, 02-26-2012 08:21 PM
    • Replies: 0
    • Views: 1,354
    02-26-2012, 08:21 PM Go to last post
  17. Set Complement

    In looking through my old text (Hogg and Craig ... ugh), I remember my professor gave a horrible answer to this question and no one in class really...

    Started by bryangoodrich‎, 02-26-2012 02:42 AM
    • Replies: 3
    • Views: 3,148
    02-26-2012, 05:56 PM Go to last post
  18. need help in probability problem

    Hi all, I'm practicing some probability problems and I got a homework couldn't understand a problem in here The problem is: Anew digital scale...

    Started by yoha‎, 02-23-2012 10:27 PM
    • Replies: 4
    • Views: 1,936
    02-26-2012, 02:35 PM Go to last post
  19. coin toss

    I have a coin that lands heads with probability p1; you have a coin that lands heads with probability p2. I toss my coin until I get a head. Each...

    Started by meena‎, 02-23-2012 06:39 AM
    coin toss probability
    • Replies: 8
    • Views: 3,463
    02-26-2012, 05:35 AM Go to last post
  20. Question Find Maximum Likelihood Estimator of Gamma Distribution

    Find Maximum Likelihood Estimator of Gamma Distribution Given: f(x; β) = * x * e^(-x/ β) for 0 < x < infinity EX = 2β and VarX =...

    Started by Ceci020‎, 02-25-2012 08:03 PM
    • Replies: 0
    • Views: 4,841
    02-25-2012, 08:03 PM Go to last post
  21. Can anybody help please!!

    I'm studying probabilities and I came across the following problem. It's actually answered in the book but I couldn't really figure it out. ...

    Started by yoha‎, 02-25-2012 07:28 PM
    • Replies: 0
    • Views: 1,777
    02-25-2012, 07:28 PM Go to last post
  22. Question Conditional Probability and Negative Exponential distribution.

    Good day to everyone. I'm an italian computer science student, and i'm missing just an exam to get my long awaited Laurea... long story short, I had...

    Started by fade2black‎, 02-24-2012 01:03 PM
    • Replies: 4
    • Views: 3,358
    02-25-2012, 09:28 AM Go to last post
  23. probability

    ok so the question says; find the probability that exactly two heads appearing in two tosses of a fair coin............... is the answer a half???...

    Started by cushane‎, 02-24-2012 10:48 PM
    • Replies: 1
    • Views: 2,275
    02-24-2012, 11:26 PM Go to last post
  24. Probability Homework(2)

    The deeper i go into the probability chapter, the more confused i get :(, here are sum questions. they might be really easy but i'm not getting them....

    Started by aisha00‎, 12-09-2010 12:14 PM
    • Replies: 9
    • Views: 16,967
    02-24-2012, 11:19 PM Go to last post
  25. Moment Generating Function

    If the joint moment generating function of X and Y is M X,Y (t1, t2) = 6 / (1-t1) * and X,Y are the times that required for two tasks to be...

    Started by Darktranquillity‎, 02-22-2012 02:26 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 5,778
    02-23-2012, 01:13 PM Go to last post
  26. Feedback sought on finding a probability based on a permutation / binomial D

    Hi everyone, I've just signed up and I'm posting this here (and not in the other probability section) since it's not a course or homework problem....

    Started by doc‎, 02-05-2012 12:35 PM
    binomial distribution, permutation, probability
    • Replies: 3
    • Views: 2,365
    02-22-2012, 04:50 PM Go to last post
  27. Probability in rates

    Hello there, I've got a problem that is probably very simple but I just can't figure it out. Imagine that there is an event A that can happen...

    Started by Ararapina‎, 02-22-2012 11:55 AM
    • Replies: 2
    • Views: 1,776
    02-22-2012, 04:14 PM Go to last post
  28. Combining 2 transitional probability matrices?

    Hello, How would you/or is it possible to combine two transitional probability matrices? Say for example I have 2 matrices that both measure...

    Started by bradyj2‎, 02-21-2012 11:37 AM
    • Replies: 7
    • Views: 2,126
    02-22-2012, 07:21 AM Go to last post
  29. Variances and comparison of biased and unbiased estimators.

    If was shown that if: S'^2= (summation(Yi-Ybar)^2)/n and S^2= (summation(Yi-Ybar)^2)/(n-1) then S'^2 is a biased estimator of sigma, but...

    Started by APOCooter‎, 02-21-2012 03:02 PM
    • Replies: 4
    • Views: 2,842
    02-21-2012, 06:40 PM Go to last post
  30. Normal Approximation to the Binomial..help please

    Hi, The question I need to solve is: Suppose that a short quiz consists of only 10 True/false questions. Find the probability of a student...

    Started by pcampin‎, 02-21-2012 01:55 PM
    • Replies: 2
    • Views: 1,657
    02-21-2012, 04:41 PM Go to last post
  31. Categorizing a question: binomial OR normal OR normal approx. of binomial.

    *************Please ingore this question************ *********It's actually a 'Distribution of the Sample Means' question******* What...

    Started by pcampin‎, 02-21-2012 02:41 PM
    • Replies: 0
    • Views: 2,119
    02-21-2012, 02:41 PM Go to last post
  32. particle representation of a distribution

    hi, I stumbled upon the 'particle representation of a distribution' but couldn't find a propoer definition of it. What is it used for? Any comments...

    Started by fuzzyswat‎, 01-04-2012 06:43 AM
    particle representation, probability distributions
    • Replies: 2
    • Views: 2,105
    02-21-2012, 08:30 AM Go to last post
  33. States of a Markov Chain question?

    Hello all, I would be grateful if somebody could advise me or comment on a Markoc Chain question that I have. It is with regards to the state...

    Started by bradyj2‎, 02-21-2012 07:36 AM
    • Replies: 0
    • Views: 1,348
    02-21-2012, 07:36 AM Go to last post
  34. Any suggestions on how to figure out these two problems????

    Im getting frustrated because....I have been looking through my textbooks and notes trying to figure out how to set these two problems up...Can...

    Started by cdwhitak‎, 02-19-2012 05:44 PM
    • Replies: 1
    • Views: 4,678
    02-19-2012, 05:47 PM Go to last post
  35. conditional normal distribution

    dear all, i have the following question that i don't get my head around. suppose x1 and x2 are jointly normally distributed. i am interested in...

    Started by michael27‎, 01-26-2012 02:38 PM
    • Replies: 1
    • Views: 3,986
    02-19-2012, 04:51 PM Go to last post
  36. The Dice Game

    Hello everyone, I want to ask questions about my task. Below are the description. Thank you in advance. Kind regards, Kirman. The aim...

    Started by kirman‎, 02-18-2012 11:23 PM
    • Replies: 3
    • Views: 5,305
    02-19-2012, 01:38 PM Go to last post
  37. Probability different colored balls picked without replacement "at least one of each"

    Hello everyone. I am a hobby programmer working on a cool new project. I've always loved probability and always wanted to write a program using it...

    Started by neogenesisrevo‎, 02-16-2012 10:07 AM
    • Replies: 7
    • Views: 10,043
    02-19-2012, 07:38 AM Go to last post
  38. Chi-Square distribution problem

    So my professor started doing stuff with the chi-square distribution this week and I've been lost for almost the entire time. Consider a random...

    Started by APOCooter‎, 02-18-2012 02:20 PM
    • Replies: 7
    • Views: 9,625
    02-18-2012, 05:50 PM Go to last post
  39. Statistical Analysis - Maximum Likelihood Fit

    Hi, I have a data sample from an experiment. the data is a list of times in days each indicatiing a detection event from a particle detector. After...

    Started by knowlewj01‎, 02-15-2012 09:36 AM
    • Replies: 2
    • Views: 2,020
    02-18-2012, 06:04 AM Go to last post
  40. Calculating Probability of Cyber Attack Data

    Folks, need some help, maybe this question is incomplete and needs more data but let me know if thats the case as well: I have a tool that...

    Started by jhingi‎, 02-17-2012 08:42 PM
    • Replies: 0
    • Views: 4,390
    02-17-2012, 08:42 PM Go to last post
  41. Binomial Random Variable Help

    Hey everyone! I'm struggling with this question: Let x be a binomial random variable and suppose n= 20, p=0.5. Then P(μ-σ ≤ x ≤ μ+σ) is: i...

    Started by snypeshow‎, 02-17-2012 06:22 PM
    • Replies: 1
    • Views: 2,331
    02-17-2012, 07:34 PM Go to last post
  42. geometric prob

    hey there, I have a question. X is geometric random variable ~G(1/2) the question: calculate E( (5/4)^x ) = ? Thanks, Jim.

    Started by eyehawk‎, 02-16-2012 12:52 PM
    • Replies: 9
    • Views: 2,610
    02-17-2012, 11:08 AM Go to last post
  43. Probability

    if a baseball manager has 5 pitchers and catchers, how many different possible pitcher-catcher combinations can he field?

    Started by Sothea‎, 02-14-2012 03:48 AM
    • Replies: 3
    • Views: 2,792
    02-16-2012, 04:51 PM Go to last post
  44. propability problem

    Charlie and Lora are having a mud fight trying to the other one's sand castle. This is achieved as soon as all towers have been destroyed.CHarelie's...

    Started by frankpupu‎, 02-16-2012 09:56 AM
    • Replies: 1
    • Views: 1,436
    02-16-2012, 10:08 AM Go to last post
  45. hypergeometric distribution problem

    Hi I'm having a hard time finding the solution to the following problem: Any ideas, tips or anything that will guide me in the right direction...

    Started by odgaard‎, 02-15-2012 09:31 AM
    • Replies: 6
    • Views: 2,571
    02-15-2012, 11:56 AM Go to last post
  46. Calculate Prob's using multiple means and std dev's

    Hi all. My first post. I'm trying to find a correct methodology for a problem and am a bit stumped as I don't really know how to frame it in a...

    Started by Wenona‎, 02-14-2012 05:57 AM
    • Replies: 4
    • Views: 2,595
    02-15-2012, 09:03 AM Go to last post
  47. Question - Having a hard time figuring this out

    USA Today reported that "high-volume" hospitals performed 77% of bladder removal surgeries, and the rest were performed in "low-volume" hospitals....

    Started by ramil13‎, 02-14-2012 08:20 PM
    • Replies: 4
    • Views: 2,149
    02-15-2012, 03:41 AM Go to last post
  48. Smile Request: Exams(CS109)

    hi, im studying for an exam in Introduction for Probability to CS.. does anyone have past exams of CS109 from Stanford/ similiar courses at...

    Started by bravehera1‎, 02-14-2012 03:27 PM
    • Replies: 2
    • Views: 2,830
    02-14-2012, 07:09 PM Go to last post
  49. 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: 11,862
    02-14-2012, 10:56 AM Go to last post
  50. Probability distribution function for extracting b balls out of a urn.

    Hello everybody, First of all I would like to say that I am not a student trying to get his homework solved. Rather I am a software developer...

    Started by Radu‎, 02-01-2012 12:01 PM
    balls, binomial, hypergeometric, urn
    • Replies: 4
    • Views: 3,909
    02-14-2012, 10:09 AM Go to last post
  51. Sum of Poisson Distribution

    Hi everyone. Let X and Y be independent, with X~Poi(lambda) and Y~Poi(mu). Put Z = X + Y as their sum. Find the distribution X | Z = z.

    Started by woody198403‎, 08-18-2009 07:07 AM
    • Replies: 8
    • Views: 19,452
    02-13-2012, 07:50 PM Go to last post
  52. Point Estimation, Bias, and Mean Square Error question

    The reading on a voltage meter connected to a test circuit is uniformly distributed over the interval (theta, theta + 1), where theta is the true but...

    Started by APOCooter‎, 02-12-2012 02:37 PM
    • Replies: 1
    • Views: 7,069
    02-12-2012, 02:55 PM Go to last post
  53. I don't understand the solution

    Two cards are drawn with replacement from a standard deck. >> -Given there is at least one king drawn, what is the probability both >> cards are...

    Started by kevin.lated‎, 02-12-2012 01:05 PM
    • Replies: 1
    • Views: 1,614
    02-12-2012, 01:13 PM Go to last post
  54. Probability of floods

    Hi, I was arguing with a friend of mine that people cannot make rational expectations when it comes to expecting a true probability of some events....

    Started by xbender‎, 02-11-2012 12:09 PM
    • Replies: 0
    • Views: 991
    02-11-2012, 12:09 PM Go to last post
  55. Defining parameter following survival function

    I am a newbie, with limited statistical skills, so please excuse/correct basic mistakes. My question is about the characteristics of a...

    Started by Iphix‎, 02-09-2012 03:08 AM
    • Replies: 5
    • Views: 1,791
    02-09-2012, 02:10 PM Go to last post
  56. Comparing 2 continuous uniform distributions

    I have what appears to be a very simple problem, but am having difficulties working out a solution. Any help would be much appreciated. The...

    Started by economist1‎, 02-09-2012 10:55 AM
    probability distributions
    • Replies: 1
    • Views: 3,075
    02-09-2012, 02:02 PM Go to last post
  57. Thinking Fast and Slow - Probability question

    In his book (Thinking Fast and Slow) Kahneman states: For example, if you believe that 3% of graduate students are enrolled in computer science (the...

    Started by wardjames‎, 02-06-2012 12:01 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 8,359
    02-08-2012, 04:30 PM Go to last post
  58. 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: 1,388
    02-08-2012, 02:46 PM Go to last post
  59. Poison -concept check

    Hi, I'm doing some practice questions for my upcoming test. 1.If there is no fixed-upper limit vlaue for the Poisson random variable,X does this...

    Started by kevin.lated‎, 02-08-2012 01:19 PM
    • Replies: 1
    • Views: 1,501
    02-08-2012, 01:22 PM Go to last post
  60. Standard Deviation

    Please help me with this problem. Also, is there a way to calculate this in Excel? A National study has determined that people who work full time...

    Started by rdeb‎, 02-07-2012 11:14 PM
    • Replies: 2
    • Views: 2,701
    02-07-2012, 11:17 PM Go to last post

+ Post New Thread

Thread Display Options

Use this control to limit the display of threads to those newer than the specified time frame.

Allows you to choose the data by which the thread list will be sorted.

Order threads in...

Note: when sorting by date, 'descending order' will show the newest results first.

Icon Legend

Contains unread posts
Contains unread posts
Contains no unread posts
Contains no unread posts
More than 15 replies or 300 views
Hot thread with unread posts
More than 15 replies or 300 views
Hot thread with no unread posts
Closed Thread
Thread is closed
Thread Contains a Message Written By You
You have posted in this thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts






Advertise on Talk Stats