1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
    05-10-2017
    Views:
    1,960
+ Post New Thread
Page 15 of 91 FirstFirst 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 65 ... LastLast
Threads 841 to 900 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: 30,403
    09-30-2005, 09:44 AM Go to last post
  1. please help me!!!thanks and godbless u always

    a) use normal approx P( x>810) = P ( z> (810-.73*1100)/(.73*.27*1100))=.4871 or 48.71% b) P (x<1030) = P(z<...

    Started by cathy_qt24‎, 07-07-2013 03:07 AM
    • Replies: 1
    • Views: 1,904
    07-07-2013, 04:34 AM Go to last post
  2. Probability of scrabble game based on scores

    How do i calculate the probability in a scrabble game based on scores. Lets say Player A has 42 score and Player B has 90. How do i calculate the...

    Started by catvsrat‎, 09-18-2012 11:57 AM
    probability, scores, scrabble
    • Replies: 1
    • Views: 1,440
    09-18-2012, 01:54 PM Go to last post
  3. Expectation of iid variables

    Hello I hope to get some help with this one. Let X_1,X_2 be iid random variables, both concentrated on I\subset\mathbb{R}_+. Define ...

    Started by cauchy‎, 12-16-2012 11:22 AM
    • Replies: 7
    • Views: 4,158
    12-17-2012, 12:18 PM Go to last post
  4. Craps Probability

    I was a math major at Johns Hopkins, but for some reason this is giving me trouble. I want to know the probability of rolling EITHER a 4, 5, 9, or...

    Started by CaZeek‎, 04-15-2012 03:10 AM
    • Replies: 3
    • Views: 1,863
    04-15-2012, 05:36 AM Go to last post
  5. 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: 1,093
    04-30-2016, 01:36 PM Go to last post
  6. Normal Random Variables, Central limit theorem

    It is desired to estimate the mean compresive strength of a particular formulation of concrete. Samples are taken and their compressive strength...

    Started by cbutt78‎, 04-18-2011 02:10 PM
    • Replies: 1
    • Views: 1,893
    04-19-2011, 10:18 AM Go to last post
  7. CHI^2 test for binomial variables which are not normally distributed

    Hello, Assume that you have X_1\cdot X_n independant random variables. If they are normally distributed we can use the Chi^2 statistical test to...

    Started by CBW‎, 06-10-2015 07:59 AM
    • Replies: 0
    • Views: 906
    06-10-2015, 07:59 AM Go to last post
  8. need help on permutations

    I am trying to solve a problem that can be represented by rolling an n-sided die r times. I need to be able to figure out the probabilities of the...

    Started by cchriste‎, 04-11-2012 01:53 PM
    probability help
    • Replies: 1
    • Views: 1,428
    04-11-2012, 04:14 PM Go to last post
  9. probability help

    Hi I am new to statistics and have been given the following question: Suppose X~B(16, 0.75) How do I calculate E(X) and V(X)? All the...

    Started by ccs‎, 12-13-2010 01:08 PM
    • Replies: 5
    • Views: 2,561
    12-13-2010, 01:59 PM Go to last post
  10. New to probability

    Can someone help me solve the following P(0.55≤ z ≤ 1.28). How does one determine a left side vs right side table?

    Started by Cdoss‎, 06-28-2016 09:39 PM
    • Replies: 1
    • Views: 2,221
    06-29-2016, 12:01 AM Go to last post
  11. Chance of an Occurance

    ok, I am an accountant, not a statistician. Something happened to me personally and I would like to figure out the probability that it would have...

    Started by cdurta‎, 07-28-2013 06:46 PM
    • Replies: 8
    • Views: 3,001
    07-30-2013, 11:49 PM Go to last post
  12. 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: 4,680
    02-19-2012, 05:47 PM Go to last post
  13. help with setting up formula

    I am struggling with formula set up for the following practice problem study of caffeine consumption, smoking, etoh consumption and physical...

    Started by CEBARBOUR‎, 06-17-2011 11:14 AM
    • Replies: 1
    • Views: 1,988
    06-17-2011, 11:32 AM Go to last post
  14. Determine how close a real distribution is to an ideal one.

    My apologies if this is an insultingly easy question: I'm trying to determine how close a real distribution is to an ideal one. Example: a...

    Started by CECampbell‎, 09-28-2011 08:36 AM
    • Replies: 1
    • Views: 1,608
    09-28-2011, 11:28 AM Go to last post
  15. 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
  16. Question Probability of winning a jackpot

    Hi, i'm new here. I was wondering whats the probability of wining a football prediction jackpot with a win draw or loose options in 13 games...

    Started by cedriclol‎, 12-21-2015 05:29 AM
    • Replies: 1
    • Views: 1,686
    12-22-2015, 05:31 PM Go to last post
  17. Pure Birth Process

    Hi guys, I'm having some trouble with this question: For part i), I have df_0/dt = -\lambda f_0 giving f_0=\exp(c_1-\lambda t) The...

    Started by ceejay2000‎, 01-13-2013 08:15 PM
    • Replies: 0
    • Views: 1,117
    01-13-2013, 08:15 PM Go to last post
  18. probability of 8 successes out of 256 events

    Hi all hope you are well, i was trying to calculate what the probability of getting exactly 8 successes in 256 events. I used a Binomial on line...

    Started by censura‎, 05-21-2015 02:44 AM
    • Replies: 5
    • Views: 1,515
    05-25-2015, 06:12 AM Go to last post
  19. probobility of a tax inspecton

    From our statistics the probability of getting an inspection in any single week is a pprox 1,000 : 1 I was trying to work out the probability...

    Started by censura‎, 09-27-2017 06:40 PM
    • Replies: 1
    • Views: 161
    09-27-2017, 06:52 PM Go to last post
  20. Sum of two random variables each independent with the third?

    The following statement seems obvious, but I found it difficult to prove formally, even assuming that the variables are discrete. Let X and Y are...

    Started by CentrotuS‎, 12-29-2008 11:02 AM
    • Replies: 1
    • Views: 3,053
    12-29-2008, 11:32 AM Go to last post
  21. Help with a problem.

    Problem: 2. Photocards-R’-Us is a photo card printer. For this year, they have found that 10% of the cards they make are of inferior quality (blurred...

    Started by centurion1‎, 11-26-2011 06:10 PM
    • Replies: 7
    • Views: 2,398
    11-27-2011, 07:40 AM Go to last post
  22. Lightbulb Random Walk in 2D

    Please check the image. I need the asked probabilities. I know it is easy for u but my knowledge about probability is not good :) Thank you

    Started by cestar‎, 05-15-2011 10:08 AM
    • Replies: 2
    • Views: 2,026
    05-16-2011, 03:52 AM Go to last post
  23. Talking Keno or Lotto Revisited

    Jerry, Well, you asked for a new thread ... funny thing is, we were both replying at nearly the same moment, so I had responded to the old thread....

    Started by cet‎, 09-27-2006 04:45 PM
    • Replies: 3
    • Views: 3,013
    10-19-2006, 06:44 AM Go to last post
  24. Lottery Probabilities

    I'm no statistician but hope for some help from the experts. The UK national lottery has been drawn roughly 1500 times since 1994. The frequencies...

    Started by cgc‎, 09-12-2009 06:16 PM
    • Replies: 2
    • Views: 2,994
    09-15-2009, 09:08 PM Go to last post
  25. Card Game Probability Question!

    The game is screw your neighbor! Four card players at a table. Two players have 1 chip two players have 2 chips. The player who gets delt the low...

    Started by chad‎, 07-27-2011 02:25 PM
    • Replies: 1
    • Views: 1,731
    07-27-2011, 05:35 PM Go to last post
  26. Need help with probabilities for work

    All, I am in desperate need of some help that isn't school related. I have some issues at work that need to be addressed and they deal with...

    Started by chadboehne‎, 05-24-2011 10:58 AM
    • Replies: 6
    • Views: 2,159
    05-24-2011, 03:40 PM Go to last post
  27. Probability | Card deck

    A card is drawn from a well shuffled deck of 52 cards. Find P(drawing a face card or a 4). Now since the cards can't be replaced, would you get...

    Started by chadmac‎, 03-22-2011 01:14 AM
    • Replies: 1
    • Views: 6,481
    03-22-2011, 01:58 AM Go to last post
  28. Can someone tell me the why?

    I'm trying to figure out this self-check exercise but don't see why it multiplies by 2 to the 5th or 32. Can someone help?

    Started by ChadP‎, 06-26-2007 04:32 AM
    • Replies: 1
    • Views: 2,135
    07-03-2007, 12:58 PM Go to last post
  29. Probability distribution

    5.20 An investor plans to put $50,000 in one of four investments. The return on each investment depends on whether next year’s economy is strong or...

    Started by ChadP‎, 07-10-2007 01:27 PM
    • Replies: 1
    • Views: 5,455
    07-11-2007, 12:33 AM Go to last post
  30. Sample mean Question

    Research indicates that, in general, women in United States earn $0.77 for each $1.00 earned by a man in an equivalent job. A sample of 100 women...

    Started by chahn20‎, 02-21-2011 03:00 AM
    • Replies: 0
    • Views: 2,345
    02-21-2011, 03:00 AM Go to last post
  31. simple cdf and pdf problem?

    Let X and Y be independent random variables, uniformly distributed in the interval . Find the cumulative distribution function and the probability...

    Started by chaopal‎, 01-23-2012 08:37 PM
    • Replies: 1
    • Views: 3,855
    01-27-2012, 01:06 PM Go to last post
  32. Distribution of a random sum of random non-iid variables

    I'm trying to find the probability distribution of a sum of a random number of variables which aren't identically distributed. Here's an example: ...

    Started by chaps‎, 05-10-2017 10:11 AM
    • Replies: 1
    • Views: 1,410
    05-11-2017, 03:32 AM Go to last post
  33. Question Spearman Correlation and Correlation of Attributes

    Hi All, Could anyone advise on this question? Will a Spearman Correlation provide a description of the Correlation of Attributes? I'm...

    Started by Charles‎, 12-17-2012 10:08 PM
    • Replies: 0
    • Views: 1,296
    12-17-2012, 10:08 PM Go to last post
  34. probability model driving me crazy

    Hello and I am desperate for some help with a homework question. We have been studying the binomial model were given a problem that does not behave...

    Started by charlesbgsu2006‎, 10-20-2006 11:27 AM
    • Replies: 1
    • Views: 2,172
    10-20-2006, 01:18 PM Go to last post
  35. Predicting server load for MMORPG

    deleted content

    Started by CharlesD‎, 09-05-2010 03:50 PM
    • Replies: 0
    • Views: 2,708
    09-05-2010, 03:50 PM Go to last post
  36. Help, suspiciously common birthdate

    I have a database with 41469 medical practice patients. The patients have 22499 different (unique) dates of birth. Sorting by occurrence produces...

    Started by CharlesIsw‎, 09-21-2009 05:34 PM
    • Replies: 4
    • Views: 2,576
    09-27-2009, 02:23 AM Go to last post
  37. Lightbulb Probability Question

    Working through an sample paper for an upcoming exam and I've been struggling with the following stock trading problem "A total of 576 such...

    Started by Charlie Day‎, 07-29-2013 03:52 PM
    • Replies: 7
    • Views: 1,798
    07-30-2013, 11:17 AM Go to last post
  38. almost sure convergence

    Hi, I've got this question I'm trying solve for days already. Let Xn be random variable = 2 with prob 1/3 and = 1/2 with prob 2/3 Let Zn be...

    Started by chchamp‎, 01-12-2012 01:38 PM
    • Replies: 5
    • Views: 4,305
    01-13-2012, 04:20 AM Go to last post
  39. Lottery Probability

    Having a really tough time with this one. Six different winning numbers are selected at random from, 1 to 37. A player also selects six...

    Started by checkeredshawn‎, 11-04-2006 12:42 AM
    • Replies: 2
    • Views: 3,110
    11-04-2006, 01:30 PM Go to last post
  40. Minimising wastage in cutting poles problem

    Hi, I'm working this problem for a Probability course and having trouble with what to do after the very first step. The problem is: I think for...

    Started by CheesePlease‎, 05-07-2013 06:04 AM
    • Replies: 4
    • Views: 1,791
    05-08-2013, 08:02 AM Go to last post
  41. Easy question regarding percentages

    I am currently working on a website project and am wishing I had paid more attention in my statistics class from a few semesters ago. Lets say...

    Started by ChEeZeBaLL‎, 08-23-2009 02:50 AM
    • Replies: 3
    • Views: 1,813
    08-25-2009, 02:05 AM Go to last post
  42. Can I calculate a p-value here?

    Hey everyone! Ok so I ran a biochemistry experiment the other day and I wanted to calculate a p-value for my data. The experiment is pretty...

    Started by chemnerd1‎, 04-02-2009 03:19 AM
    • Replies: 2
    • Views: 7,432
    04-02-2009, 04:47 PM Go to last post
  43. Question about use of Kernel probability Distribution

    Hello everyone, I had a general question on the use of kernel probability density estimation for one dimensional data. I want to apply it to my...

    Started by chemnerd1‎, 04-05-2009 08:35 PM
    • Replies: 0
    • Views: 2,400
    04-05-2009, 08:35 PM Go to last post
  44. 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: 2,548
    09-11-2007, 06:02 PM Go to last post
  45. Need lots of help - Binomial Probabilities

    I completely confused on this my problem is this: Richard has just been given a 10 question multiple-choice quiz in his history class. Each...

    Started by CheriHagans‎, 11-16-2005 10:18 PM
    • Replies: 2
    • Views: 13,382
    11-16-2005, 10:29 PM Go to last post
  46. Variance of Zero

    If you have a variance of zero, will the probability be 100%, 50% or "cannot be determined"? Thanks!

    Started by Chessie‎, 03-04-2008 02:02 PM
    • Replies: 2
    • Views: 2,869
    03-04-2008, 03:49 PM Go to last post
  47. Expected searches calculation for finding a discrepancy

    Say you have an urn containing two different coloured balls. If the task is to keep blindly selecting balls without replacement until a 'target'...

    Started by chester‎, 04-22-2013 07:49 PM
    • Replies: 1
    • Views: 1,821
    04-23-2013, 12:41 AM Go to last post
  48. Z-values and probability

    Suppose concentration of arsenic (in ppb) in groundwater sampled quarterly from a particular well can be modeled with a normal distribution with a...

    Started by chickennugget‎, 03-09-2014 07:30 PM
    probability homework help
    • Replies: 0
    • Views: 1,334
    03-09-2014, 07:30 PM Go to last post
  49. Probabilities involving sample means

    I'm having trouble with this, I need help! I construe that the heights of hobbits are approximately normally distributed with mean 36 inches and...

    Started by chicklet0323‎, 11-28-2007 11:09 PM
    • Replies: 0
    • Views: 4,259
    11-28-2007, 11:09 PM Go to last post
  50. When dickey fuller test returns t statistics > 0

    When I ran the dickey fuller test on a variable, the test indicates that the t statistics is greater than zero and is greater than the absolute value...

    Started by childofprodigy‎, 05-29-2010 10:16 PM
    • Replies: 0
    • Views: 3,491
    05-29-2010, 10:16 PM Go to last post
  51. Question Just a tiny bit of assistance

    Among U.S. households, 24&#37; have telephone answering machines. If a telemarketing campaign involves 2,500 households, find the probability that more...

    Started by chilipancakes‎, 08-12-2008 07:25 PM
    • Replies: 1
    • Views: 2,294
    08-12-2008, 09:30 PM Go to last post
  52. Probability of Failure of components...

    Hi there, My question is pretty simple, but I think I am going about the wrong way. An aircraft part has a .40 probability of being...

    Started by ChinookDriver47‎, 02-04-2015 09:21 PM
    • Replies: 1
    • Views: 934
    02-05-2015, 12:40 AM Go to last post
  53. Probability Function Problem

    A customer is equally likely to select each of six product brands, labeled "brand one," and so forth. Let X equal the brand number selected. Let Y...

    Started by chipc‎, 01-19-2012 04:14 PM
    • Replies: 1
    • Views: 1,704
    01-20-2012, 06:59 AM Go to last post
  54. Help with derivation of probability density of {event generation} & {event detection}

    I would like to specify a new probability distribution that relates to an event of size M being produced by some process and subsequently detected....

    Started by chippy‎, 03-31-2012 10:31 AM
    combining variables, density function, probability distributions
    • Replies: 6
    • Views: 1,912
    04-05-2012, 05:24 PM Go to last post
  55. Random Variable with normal distribution

    I am stuck on this problem. Mean of 50, standard deviation of 10. What is the probability the random variable will assume a value between 45...

    Started by chiquitabonita‎, 03-08-2012 03:17 PM
    • Replies: 1
    • Views: 2,624
    03-08-2012, 03:40 PM Go to last post
  56. Z tables

    Can someone tell me what Z upper and Z lower values are? I am trying to find theoretical parts out of spec. The specifications are -.30 to .30 with...

    Started by cholloway‎, 01-10-2006 10:22 PM
    • Replies: 5
    • Views: 6,725
    01-12-2006, 12:31 PM Go to last post
  57. 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: 4,985
    10-27-2008, 01:18 PM Go to last post
  58. ECC failure in memory device (probability of bad word transmission)

    so this is my problem and the solution. i am looking for concurrence or disagreement with my method. any help will be appreciated. ECC works for...

    Started by ChootarLaal‎, 12-10-2008 02:15 PM
    • Replies: 0
    • Views: 3,011
    12-10-2008, 02:15 PM Go to last post
  59. Probability of solder ball inside a sealed package able to cause a failure

    I have a hermetically sealed semiconductor package, NAND. And I have some foreign object debris (FOD), solder balls to be exact, inside this device....

    Started by ChootarLaal‎, 06-04-2015 09:21 AM
    • Replies: 0
    • Views: 866
    06-04-2015, 09:21 AM Go to last post
  60. Need Help, how to interpret the goodness of fit, bivariate probit model

    I ran proc qlim in SAS, bivariate probit model, but dont know how to interpret the results. Could anyone please help me out of this problem.... ...

    Started by Chopin‎, 03-04-2009 04:01 AM
    • Replies: 0
    • Views: 5,516
    03-04-2009, 04:01 AM Go to last post

+ Post New Thread
Page 15 of 91 FirstFirst 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 65 ... LastLast

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