1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
    05-10-2017
    Views:
    2,807
+ Post New Thread
Page 18 of 92 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 35 36 37 68 ... LastLast
Threads 1021 to 1080 of 5461

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: 31,114
    09-30-2005, 09:44 AM Go to last post
  1. Simple probability

    If I have: The year of eruption The month of eruption 1660 July 1682 August 1694 April 1698 January 1707 July 1737 May 1760 March

    Started by mboricgs‎, 12-01-2013 02:49 PM
    • Replies: 2
    • Views: 2,259
    12-03-2013, 08:48 AM Go to last post
  2. sampling based upon probability of event occurrence

    I have a sampling and probability question. A sub-assembly is assembled from 2 parts, A and B. Both are molded parts that are molded with...

    Started by kandrews‎, 12-02-2013 03:35 PM
    probability question, statistics business
    • Replies: 0
    • Views: 2,012
    12-02-2013, 03:35 PM Go to last post
  3. dependent probability question?

    Hello, I had a question about how to calculate dependent probability. Calculating independent probability is easy, simply multiply the probability...

    Started by random512‎, 11-30-2013 10:36 PM
    • Replies: 0
    • Views: 1,363
    11-30-2013, 10:36 PM Go to last post
  4. Binominal Distribution

    For this kind of question would I be best using the Binominal Distribution equation? So (n!/X!(n-X)!) (p^X(1-p)^n-x) Or would another...

    Started by ianhirst‎, 11-28-2013 03:50 PM
    • Replies: 3
    • Views: 1,216
    11-30-2013, 04:39 AM Go to last post
  5. regions of rejection of two hypothesis of random process

    deleted post

    Started by stephanie‎, 11-29-2013 10:25 PM
    • Replies: 0
    • Views: 1,515
    11-29-2013, 10:25 PM Go to last post
  6. Poisson Process problem

    Having a lot of trouble with Poisson processes... Can anyone get me started on this problem? Customers enter a store following a Poisson Process...

    Started by SP7‎, 11-29-2013 02:49 PM
    • Replies: 0
    • Views: 2,237
    11-29-2013, 02:49 PM Go to last post
  7. Help verifying a CDF is actually a CDF

    Hello All, First post here so thank you for reading and hopefully helping out! I'm feeling stumped with this first question and was hoping someone...

    Started by haml‎, 11-29-2013 02:03 PM
    • Replies: 2
    • Views: 1,666
    11-29-2013, 02:33 PM Go to last post
  8. basic problem computing pdf

    If I have a pdf, say X~Uniform and Y= -X, would the pdf of Y be 1/6 ? How would I get the pdf using P(-X < - y) = P(X > y) = 1 - P( X < y) = 1-...

    Started by stephanie‎, 11-28-2013 10:33 PM
    • Replies: 2
    • Views: 1,658
    11-29-2013, 03:22 AM Go to last post
  9. Probability of Bed bugs from library - HELP :)

    I am in court tomorrow with my landlord. I am representing myself and the landlords lawyer is trying to say I got bed bugs from the library. I...

    Started by Stumpy‎, 11-28-2013 06:21 PM
    • Replies: 1
    • Views: 2,143
    11-28-2013, 09:31 PM Go to last post
  10. I Need Help with Poisson Distribution Problem!!

    I don't know where to even start with this Poisson Dist. problem, can anyone help me solve this??? The Hillel Sandwich Shop specializes in...

    Started by Saint7200‎, 11-27-2013 02:20 PM
    mathematical statistics, poisson, poisson distribution, statistics
    • Replies: 1
    • Views: 2,072
    11-27-2013, 04:37 PM Go to last post
  11. Distribution of sum of normal and gamma random variable

    Let Z = X + Y where X \sim N\left(\mu, \sigma^2 \right) and Y \sim \Gamma\left(k, \theta \right) using this parametrization of the Gamma...

    Started by TrueTears‎, 11-27-2013 10:07 AM
    • Replies: 0
    • Views: 2,465
    11-27-2013, 10:07 AM Go to last post
  12. Discrete Random Variable

    Hey all, I have a Discrete Random Variable taking on values x= 1,3,3^2,3^3,...3^m and f(x)=P(X=x)=c/x for some constant c, find value of c. How...

    Started by ITman95‎, 11-20-2013 01:42 PM
    2 Pages
    1 2
    • Replies: 21
    • Views: 3,929
    11-27-2013, 09:12 AM Go to last post
  13. Not sure how to solve this question, please help

    question is asking: if X~N(,σ)=N(K,5), find K if P(X≥6)=.9; if X~N(5,k) find K if P(X≥5)=.9 Not sure how to interpret or even begin to solve...

    Started by ITman95‎, 11-25-2013 04:45 PM
    • Replies: 1
    • Views: 1,758
    11-27-2013, 09:08 AM Go to last post
  14. probability of finding 2 random DNA fragments matching between genomes

    Hi all, I have a question about probabilty. There are 2 genomes (a long string, composed of 4 letters: A, T, G & C), each 150,000 bases (letters)...

    Started by GummyBear‎, 11-26-2013 03:06 PM
    biology, compare, probability
    • Replies: 4
    • Views: 1,785
    11-27-2013, 08:45 AM Go to last post
  15. Another Die question

    If one was to roll a fair day and if the outcome is 2 then select a number at random in and other wise select a number at random in . if the number...

    Started by ITman95‎, 11-21-2013 04:39 PM
    • Replies: 10
    • Views: 2,179
    11-27-2013, 08:37 AM Go to last post
  16. Probability of a team to score in sports

    Hi All, A basic (hopefully) conditional probability question, but I can't get my head around. I want to calculate the probability based on past...

    Started by neorich‎, 11-27-2013 06:28 AM
    • Replies: 0
    • Views: 2,379
    11-27-2013, 06:28 AM Go to last post
  17. Pr (10 and a heart) - Am I overthinking this?

    Hi guys, This may be way simplistic for this forum, so I apologise in advance. Drawing two cards from a standard 52 card deck. What is the...

    Started by camm91‎, 11-26-2013 06:43 AM
    • Replies: 3
    • Views: 1,924
    11-26-2013, 09:43 PM Go to last post
  18. please help with this...

    hello,im new here and im looking for help about this problem.... well, i have 100,000 random binary sequences like this... ...

    Started by wnuke‎, 11-24-2013 05:20 PM
    binary, sequence
    • Replies: 2
    • Views: 1,578
    11-26-2013, 11:13 AM Go to last post
  19. A Box containing coins question

    If a box contains 4 pennies, 4 nickels, 4 dimes and 2 coins are selected at random WITH replacement and D (>=0) is the numerical difference between...

    Started by ITman95‎, 11-22-2013 03:31 PM
    • Replies: 8
    • Views: 2,363
    11-25-2013, 04:37 PM Go to last post
  20. Toll booth question

    If the time between successive trucks arriving at a toll booth is an exponential random variable w/ parameter theta=3 find probability that theres a...

    Started by ITman95‎, 11-21-2013 04:55 PM
    • Replies: 4
    • Views: 1,258
    11-25-2013, 11:40 AM Go to last post
  21. Probability and Samples

    A random sample of n=16 is selected from a normal distribution of a mean of 50 and standard deviation of 10 *what is the probability that the...

    Started by nata‎, 11-25-2013 09:53 AM
    probability, random sample
    • Replies: 0
    • Views: 1,501
    11-25-2013, 09:53 AM Go to last post
  22. Probability and standard deviation

    Dear Members, I am struggling with this particular problem and I am not sure about my answers. If anybody could verify them that would be of great...

    Started by krspatgaon‎, 10-25-2013 01:11 AM
    • Replies: 5
    • Views: 4,450
    11-25-2013, 12:10 AM Go to last post
  23. Is there a way to simulate skewed data with only a mean and standard error?

    I have a mean and its corresponding standard deviation from a skewed distribution. The original data, which I don't have, is on a likert scale from 1...

    Started by sunny3333‎, 11-22-2013 09:08 PM
    • Replies: 4
    • Views: 1,328
    11-23-2013, 07:36 PM Go to last post
  24. The movie, The Parallax View

    Eighteen people were at a party to honor a prominent guest when that person was shot and killed. Over the next three years 1/3 of these eighteen...

    Started by Outlier‎, 11-21-2013 08:29 PM
    • Replies: 2
    • Views: 1,686
    11-23-2013, 06:19 PM Go to last post
  25. Probability of finding the card?

    You get shown 5 cards, which are then shuffled and placed on the table face down. The person who shuffled the cards then asks you to find a specific...

    Started by p19101‎, 11-22-2013 02:27 PM
    • Replies: 1
    • Views: 1,241
    11-22-2013, 11:22 PM Go to last post
  26. Question Question about Standard Normal Distribution (Finding probability)

    Suppose Z is a random variable having the standard normal distribution. 1)Find the probability that Z is between 0 and (1.08 + R/10) 2)P(–w <...

    Started by YHY516‎, 11-21-2013 10:26 PM
    distribution
    • Replies: 1
    • Views: 1,204
    11-22-2013, 09:26 AM Go to last post
  27. Independent die roll

    Hi i have this problem, where a fair die is rolled until the same number occurs 2 successive times. Let X be the trial on which the repeat occurs,...

    Started by ITman95‎, 11-20-2013 05:09 PM
    • Replies: 14
    • Views: 2,311
    11-22-2013, 08:59 AM Go to last post
  28. Probability problem question

    Problem: Intel is seeking 5 qualified engineers to hire. If only 3/8 of applicants are qualified what is the probability it will take exactly 20...

    Started by ITman95‎, 11-21-2013 11:50 AM
    • Replies: 2
    • Views: 1,824
    11-21-2013, 12:33 PM Go to last post
  29. NEED HELP with Rayleigh distribution evercise!!

    Hi all!! I have some doubts in this exercise. A RV X, has a rayleigh distribution if pdf takes the form fx(x) = x/theta (exp(-x^2/2theta)) where...

    Started by arimya‎, 11-21-2013 09:34 AM
    • Replies: 0
    • Views: 2,079
    11-21-2013, 09:34 AM Go to last post
  30. Probability, normal distribution and poisson process

    I don't know how to calculate these three questions For question one, is it correct to calculate the number no passengers not showing up first and...

    Started by ehyfan‎, 11-21-2013 07:33 AM
    • Replies: 0
    • Views: 1,265
    11-21-2013, 07:33 AM Go to last post
  31. Sticky number probability

    Hi I hope someone can help. I would like to know how to work out the probability of the following: 10 random draws are made. A value is...

    Started by samthidny‎, 11-21-2013 05:15 AM
    • Replies: 0
    • Views: 1,541
    11-21-2013, 05:15 AM Go to last post
  32. Conditional Probability

    I need help with a couple of conditional probability questions: If a person is vaccinated properly, the probability of his/her getting a certain...

    Started by nancyspe‎, 11-20-2013 12:47 AM
    • Replies: 4
    • Views: 9,153
    11-20-2013, 10:57 PM Go to last post
  33. Book's formula for run probability-- correct or not?

    Hi, group, Semi-retiree here with newfound interest in probability, slowly working my way through the problems in Wm Feller's excellent book....

    Started by X-man‎, 11-09-2013 06:09 PM
    • Replies: 3
    • Views: 2,337
    11-20-2013, 06:48 PM Go to last post
  34. The thread is about probability - DID I JUST BLOW YOUR MIND

    please some one should help me solve this. Two four-sided die with numbers 1,4 on the faces are thrown. Let the two discrete random variables U and...

    Started by waleed‎, 11-20-2013 03:31 PM
    • Replies: 2
    • Views: 1,130
    11-20-2013, 04:07 PM Go to last post
  35. Card Probability

    Just want to make sure what im doing is correct. Out of a deck of 52 cards, 12 cards are selected at random w/o replacement, what is the...

    Started by ITman95‎, 11-20-2013 02:53 PM
    • Replies: 3
    • Views: 1,574
    11-20-2013, 03:57 PM Go to last post
  36. Poussin distraction

    Poisson distribution Hi guys this question has mind blanked me A call centre receives an average of 10 calls per hour. What is the...

    Started by ianhirst‎, 11-19-2013 05:10 PM
    • Replies: 6
    • Views: 2,360
    11-20-2013, 12:55 AM Go to last post
  37. Z-score from a negative x value

    Hello, I am trying to calculate the z-score for a normal random variable(x), which has a negative value. I know the formula. If x < 3.4 the mu...

    Started by BernardW‎, 11-19-2013 07:08 PM
    normal random variables
    • Replies: 1
    • Views: 2,838
    11-19-2013, 08:58 PM Go to last post
  38. Need help for couple of statistics problems

    A study showed that none of the patients treated with Malaria recovered in 50% of the cases. During a period in which 600 patients were treated, what...

    Started by rollypolly14‎, 11-18-2013 12:04 PM
    • Replies: 2
    • Views: 2,172
    11-18-2013, 12:55 PM Go to last post
  39. How to find P(x1<x2)

    X2 and x1 being 2 independent exponential variables with mean 5 and 2. I found f(x1) and f(x2) and defined y as x2 - x1 but I'm stuck there. How do...

    Started by statgoon13‎, 11-16-2013 06:42 PM
    • Replies: 7
    • Views: 3,878
    11-17-2013, 06:48 PM Go to last post
  40. Coin Toss

    Hi, There are three people, A, B ,C, tossing a coin. The first one to get heads wins, they toss in succession in the order ABC, show the...

    Started by plm‎, 11-17-2013 10:06 AM
    • Replies: 5
    • Views: 2,611
    11-17-2013, 11:54 AM Go to last post
  41. expectation proof question

    bit stuck on this proof. if P(X>=a)=0, then proof E(X) <a. try to use the expectation int(xf(x) but getting no where. any suggestion?

    Started by pzhao‎, 11-14-2013 08:05 PM
    • Replies: 3
    • Views: 2,932
    11-16-2013, 01:05 PM Go to last post
  42. Percent probability

    problem solved

    Started by ianhirst‎, 11-16-2013 12:52 AM
    • Replies: 3
    • Views: 1,664
    11-16-2013, 10:11 AM Go to last post
  43. Exclamation Probability of 11 Cards with joker

    Hello, this problem is a little tricky for me. Can you help me? I have a 11 cards deck composed of ten cards from 0 to 9 and one Joker. (that can...

    Started by ptkaisen‎, 11-16-2013 08:13 AM
    cards, joker
    • Replies: 0
    • Views: 1,778
    11-16-2013, 08:13 AM Go to last post
  44. Help

    Problem solved

    Started by ianhirst‎, 11-15-2013 11:06 PM
    • Replies: 0
    • Views: 1,160
    11-15-2013, 11:06 PM Go to last post
  45. binary sequence statistics

    Hi all, I have a problem. Supose a random sequence: 011000101010101_? I want to find the probability of next number comes 0 or 1. So i want to...

    Started by Bat09‎, 11-15-2013 09:48 AM
    • Replies: 0
    • Views: 1,271
    11-15-2013, 09:48 AM Go to last post
  46. Roulette Question

    Hi First time user here Can anyone supply a formula for the following please? I want to run a game of bingo but use a roulette wheel to...

    Started by Matthew_ch‎, 11-14-2013 04:22 AM
    • Replies: 2
    • Views: 1,495
    11-15-2013, 04:28 AM Go to last post
  47. Independent Events

    Hello, Can anyone assist with this tricky problem ? A and B are two independent events such that: P(A)+P(B)=t, where t is a number in the...

    Started by Yankel‎, 11-14-2013 02:43 PM
    • Replies: 1
    • Views: 1,807
    11-14-2013, 03:00 PM Go to last post
  48. condi prob question, stuck

    if f(x,y)=3 from 0<x<1, 0<y<x. whats the conditional densiity function for fy(y|x<0.3)? i try to use bayer theorm and marginal density, but...

    Started by pzhao‎, 11-13-2013 08:13 PM
    • Replies: 1
    • Views: 1,454
    11-14-2013, 01:00 AM Go to last post
  49. Ordinal probability question

    Person A and Person B both get the integers 1, 2 ... N. They independently arrange them in to truly random order. The compare their first digits...

    Started by dr6‎, 11-13-2013 10:01 PM
    • Replies: 1
    • Views: 1,365
    11-13-2013, 10:40 PM Go to last post
  50. max of two r.v.

    G = max (Z,Y) were f(Z,Y) = 1/15 0 <Z< 3 and 0<Y<5. 0 <g<3 integrating 0 to w for both variables = g^2 /15 3 <g<5 integrate 0 to 3 for x...

    Started by notanyone‎, 11-13-2013 08:32 PM
    • Replies: 0
    • Views: 1,283
    11-13-2013, 08:32 PM Go to last post
  51. bias coin density question

    if the density function of a bias coin is x-x^2 between 0-1. and z=0 is probability of bias coin fall on tail, z=1 is on its head, then whats...

    Started by pzhao‎, 11-13-2013 11:30 AM
    • Replies: 2
    • Views: 1,861
    11-13-2013, 08:29 PM Go to last post
  52. I need some help, please

    Hi, I have found some difficulty in solving this exercise. HINT: Use the fact that T/σ^2~chi-squared (n-1) and the moments of the chi-squared...

    Started by Fahad Alqahtani‎, 11-13-2010 04:19 PM
    2 Pages
    1 2
    • Replies: 28
    • Views: 13,637
    11-13-2013, 04:10 PM Go to last post
  53. Basketball winning streak question

    Can anyone please help me figure out how it was concluded that a basketball team with a projected .200% winning percentage has a 47% chance of...

    Started by The Game‎, 11-12-2013 05:48 AM
    • Replies: 4
    • Views: 2,737
    11-13-2013, 01:07 PM Go to last post
  54. Noise distribution in multi-variate signal - research question

    Hello all, I could use a hand with a question holding up some research. I am trying to calculate the signal to noise ratio on a signal which is...

    Started by asw20‎, 11-12-2013 04:01 PM
    • Replies: 2
    • Views: 1,731
    11-13-2013, 11:31 AM Go to last post
  55. pdf of squared uniform over [i,k]

    Suppose Z=W^2 where W is uniform

    Started by notanyone‎, 11-12-2013 04:31 PM
    • Replies: 1
    • Views: 1,745
    11-13-2013, 10:04 AM Go to last post
  56. Problem in Bayes' Theorem/ Conditional Probability

    Hi everyone ! I'm new to this site and this is my first post. This is a problem I found in my Stats textbook under the Bayes Theorem section....

    Started by GoldenSun‎, 11-12-2013 11:23 PM
    bayes, conditional probability
    • Replies: 1
    • Views: 3,453
    11-13-2013, 01:21 AM Go to last post
  57. Problem of independence variables

    x_1,x_2,x_3,x_4 each have poisson distribution. x_1 and x_2 are independent , x_1 and x_4 are independent, x_2 and x_3 are independent, x_3 and x_4...

    Started by nhkd‎, 11-12-2013 07:49 AM
    • Replies: 0
    • Views: 1,540
    11-12-2013, 07:49 AM Go to last post
  58. Conditional probability

    Hello all I need some assistance with this problem: Let A and B be two event such that: P(A|~B) = 1/2 and P(B|AUB)=2/5 Find P(B)

    Started by Yankel‎, 11-12-2013 04:50 AM
    • Replies: 1
    • Views: 1,159
    11-12-2013, 06:55 AM Go to last post
  59. Example of PDF with correlation of a specific value

    For example example of a pdf or pmf with correlation . It is obviously easy to find ones with 0,1,-1. But what would be a good general way to...

    Started by darkdream‎, 11-11-2013 05:21 PM
    • Replies: 2
    • Views: 2,550
    11-11-2013, 10:56 PM Go to last post
  60. pdf minimum of two r.v

    Suppose we have a pdf f(x,y) = (1/15) for 0 < x < 3 and 0 < y < 5 we want to calculate the pdf of K = min(x,y) for 3<k< 5, => either x or y =...

    Started by darkdream‎, 11-11-2013 05:31 PM
    • Replies: 1
    • Views: 1,272
    11-11-2013, 05:52 PM Go to last post

+ Post New Thread
Page 18 of 92 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 35 36 37 68 ... 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