1. Announcement:
05-10-2017
Views:
1,848
Page 6 of 91 First 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 56 ... Last
Threads 301 to 360 of 5449

# Forum: Probability

Probability course and homework discussion. Probability distributions. Probability theory, stochastic processes

1. ### 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)...

• Replies: 0
• Views: 30,234
09-30-2005, 09:44 AM
1. ### Geometric Distribution

A geometric Distribution is a discrete probability distribution of a random variable x that satisifies: 1. A trial is repeated unitl a success...

• Replies: 0
• Views: 26,768
09-14-2006, 05:48 PM
2. ### Quick Probability Question

Here's a quick probability question that's been stumping me this afternoon: If I have 9 novels randomly placed on a bookshelf and I remove them...

• Replies: 2
• Views: 2,542
09-16-2006, 08:52 PM
3. ### Pie slices

Hi all, I would like to know what the probability distribution for the number of pie slices could be. Or the stochastic process behind slicing....

• Replies: 0
• Views: 1,933
09-17-2006, 12:53 PM
4. ### Probabilty question

I am trying to figure this problem out. I know it seems simple, but for some reason I am having a hard time with this. Can someone show me how to...

• Replies: 1
• Views: 3,028
09-18-2006, 08:40 PM
5. ### 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...

• Replies: 4
• Views: 2,200
09-19-2006, 09:25 AM
6. ### Stuck on a problem that should be easy

So this is one of the first problems in our chapter on probability. I'm assuming I am supposed to intuit how to do this, because there are no other...

• Replies: 6
• Views: 5,063
09-19-2006, 02:57 PM
7. ### a probability problem

there are 1000 coins in a bag of which 999 are normal coins (with a head and a tail), and 1 is a ``freak'' coin which has two heads. if one coin is...

• Replies: 1
• Views: 2,523
09-19-2006, 08:17 PM
8. ### counting rules

"A fleet of ten taxis is to be dispatched to three locations in such a way that three taxis go to the first location, five taxis go to the second...

• Replies: 3
• Views: 3,876
09-21-2006, 06:51 AM
9. ### probability

a pharmaceutical firm claims that a certain medication is 92% effective in relieving arthric pain. if ten people who suffer from arthritis are...

• Replies: 16
• Views: 5,758
09-21-2006, 08:28 AM
10. ### Test score probabilities problem

Hi, appreciate any help you can provide. I tested patterns on salamanders as personal identifiers by giving human subjects images of 7 different...

• Replies: 0
• Views: 2,692
09-21-2006, 10:16 AM
11. ### I need help in finding the probability

Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gender of any other...

• Replies: 1
• Views: 6,275
09-21-2006, 03:31 PM
12. ### probability distribution

A school is administering a final examination. assume that the length of time required to complete the test is normally distributed, with a mean of...

• Replies: 3
• Views: 2,575
09-21-2006, 07:24 PM
13. ### probability

The attendance at football games at a certain stadium is normally distributed. with a mean of 55,000 and a standard deviation of 4500 A)what is...

• Replies: 7
• Views: 2,787
09-21-2006, 07:43 PM
14. ### A solitaire game with no possible moves?

Hi everyone. I just opened a solitaire game on my computer with no moves possible. Does anyone have any idea what the probability of this happening...

• Replies: 0
• Views: 2,415
09-21-2006, 09:17 PM
15. ### prove inequality

inequality theorem

• Replies: 0
• Views: 3,646
09-23-2006, 05:48 PM
16. ### probability

what is hypergeometric experiment?

• Replies: 4
• Views: 2,497
09-24-2006, 09:38 AM
17. ### 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...

• Replies: 4
• Views: 2,882
09-24-2006, 10:39 AM
18. ### Expectation, variance and covariance question

Hi I have a question which I stuck some point. Question: X_t, X_s, Y_t, Y_s, Z_t, Z_s, (~Z_t), (~Z_s) are i.i.d time series r.v. (~ is tilda...

• Replies: 0
• Views: 3,289
09-24-2006, 06:58 PM
19. ### Average probability and empirical probability

This is probably very simple. The problem I have relates to a far more complex calculation, but if I can understand the maths it will be easy enough...

• Replies: 2
• Views: 4,278
09-24-2006, 09:08 PM
20. ### Anyone can help me?

I have a question asking about how to calculate the probability when the number of outcomes is not finite. Two points L and M are placed...

• Replies: 0
• Views: 1,778
09-27-2006, 06:29 AM
21. ### Probability Density Function

Given that: f(y1, y2) = 3 - 3y2 where 0 < y1 < y2 < 1 I'm trying to find the probability: P(Y1 < .5|Y2 < .75), which is a conditional density. ...

• Replies: 1
• Views: 5,111
09-27-2006, 12:01 PM
22. ### Keno or LOTTO style

So, here is how the game goes. suppose that the game uses the numbers 1 through 50 and suppose that the operator selects eight of these. If the...

• Replies: 21
• Views: 10,521
cet
09-27-2006, 04:41 PM
23. ### Beginning Bayes problem

I'm getting about every other question right, and since the back of the book only has answers, not whole solutions, I can't tell what I'm doing...

• Replies: 1
• Views: 11,651
09-27-2006, 06:24 PM

1.Given f(-1) = 0.15, f(1) = 0.29, f(3) = 0.21, and f(5) = 0.35, find P(X ≤ 1) 2.Given f(-1) = 0.15, f(1) = 0.29, f(3) = 0.21, and f(5) = 0.35,...

• Replies: 1
• Views: 1,972
10-02-2006, 02:00 AM
25. ### random problems

I get extremely confused about how to solve these problems. I don't even have examples to go by. For instance: In how many different ways can...

• Replies: 1
• Views: 2,111
10-02-2006, 02:24 AM
26. ### Help With Negative Binomial Distribution

The negative binomial (Pascal) distribution is defined as: n = alpha + k -1 P(subK)= How do you show that the Variance is: V = alpha...

• Replies: 0
• Views: 2,618
10-02-2006, 07:53 AM
27. ### Probabilities of Gender Sequences

nCr and nPr doesn't seem to get me anywhere. What the duece?

• Replies: 2
• Views: 6,340
10-04-2006, 02:17 PM
28. ### Chuck-a-luck

in the game chuck-a-luck, three dice are rolled. A player bets a certain amount (say \$1) on a number from one to six. If the number appears on one...

• Replies: 0
• Views: 3,837
10-04-2006, 11:23 PM
29. ### bag of marbles

A bag with red marbles and blue marbles has more blue than red. If you add red marbles until 1/3 of the marbles in the bag are blue; yellow marbles...

• Replies: 0
• Views: 2,636
10-04-2006, 11:33 PM
30. ### Given probability calculate std dev

Given normal distribution, mean 500, .95 probability of value between 451 and 549, what is the std dev? How would you calculate the std dev? Thanks.

• Replies: 1
• Views: 3,406
10-05-2006, 06:44 AM
31. ### win money

A man won money when he bet unsuspecting patrons that in 4 rolls of a die, he could get at least one six, but he lost money when he bet that in 24...

• Replies: 1
• Views: 2,058
10-05-2006, 06:47 AM
32. ### selecting randomly from a sample

Hi, I have a sample of 400 observations. if I want to select randomly 100 out of the 400. could I have 5000 different combinations of the elements...

• Replies: 2
• Views: 2,336
10-06-2006, 12:40 AM
33. ### deck of cards

A person selects a card from an ordinary deck of cards. If it is a black card, she wins \$3. If it is a red card between or including 2 and 8, she...

• Replies: 1
• Views: 3,813
10-06-2006, 11:28 AM
34. ### Joint Probability Distribution

Can anyone help? The problem: Experiment = {A balance six-sided die is rolled twice} Random Variable X = {the number of 4s obtained in two...

• Replies: 3
• Views: 3,616
10-08-2006, 09:28 PM
35. ### New bee in probability..plzz help..

There are 5 red balls and 5 green balls in an upturned hat. If you remove the balls from the hat at random what are the chances of the following? ...

• Replies: 0
• Views: 1,778
10-08-2006, 10:44 PM

Let say if player A scores an average of 3 points per game, and he has played a tons of games already. What fraction of his games will be exactly...

• Replies: 3
• Views: 2,490
10-09-2006, 10:13 AM
37. ### I need help ASAP!?!?!

I am having trouble with these problems on my homework. I can't seen to grasp the concept and set up on how to solve these problems. The numbers...

• Replies: 1
• Views: 4,810
10-09-2006, 10:26 AM
38. ### Probability Distributions and Densities homework help

Probability distribution for RV X is given by f(x) = { 1/5 for 2 < x < 7; 0 elsewhere find P(3 < X < 5) as a fraction. also, Show that...

• Replies: 3
• Views: 2,631
10-09-2006, 03:38 PM
39. ### Probability Questions with Cards

I have this problem in my homework and I'm having trouble with it even if it is probably easy! Can anyone help?? There are 52 cards in a deck of...

• Replies: 2
• Views: 3,650
10-09-2006, 04:55 PM
40. ### Probablity Question!! HELP PLEASE~~

Suppose that (X, Y) is uniformly distributed over the region defined by 0<y<1-x^2 and -1<x<1, find the joint density.

• Replies: 1
• Views: 2,503
10-10-2006, 11:41 PM
41. ### Help!!

I have been trying to figure this problem out...I know it is probably the easiest thing, but I just can't put my finger on it.... If anyone could...

• Replies: 1
• Views: 1,706
10-11-2006, 08:40 AM
42. ### 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?

• Replies: 4
• Views: 2,748
10-11-2006, 11:11 AM
43. ### Probability Question -- Begging for help.

Please help me solve this problem. In a population, 60% of people are liberals. In a 6 person sample of that population what is the probability...

• Replies: 2
• Views: 2,037
10-13-2006, 08:59 AM
44. ### 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...

• Replies: 4
• Views: 4,434
10-15-2006, 05:57 AM

I do not need the answers to these questions, i just need to know how to solve them!!! please!! question 1: A board consisting of 8 members, 3 men...

• Replies: 0
• Views: 2,293
10-17-2006, 05:00 PM
46. ### hello

I need help with a few questions A carton of 12 batteries contains one that is bad. in how many ways can an inspector choose 3 of the batteries...

• Replies: 1
• Views: 1,863
10-18-2006, 11:23 AM
47. ### Verification needed

Hi there, was just wondering if someone could verify if the following is correct? Thankyou Is the number of newspapers sold per month a...

• Replies: 5
• Views: 2,307
10-18-2006, 11:47 PM
48. ### 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....

• Replies: 3
• Views: 2,986
10-19-2006, 06:44 AM
49. ### Poisson

I just took an exam and not sure if I botched up on the Poisson concept which was asked several times. Possion (e^-lambda*lambda^X/X!) .5...

• Replies: 1
• Views: 2,382
10-19-2006, 06:57 AM
50. ### Probability of Death?

Each patient that receives a particular drug has a 4% chance of dying because of the medication. If 200 patients receive this drug, what is the...

• Replies: 8
• Views: 3,842
10-19-2006, 12:05 PM
51. ### Approximately normal distribution

I am trying to figure out how to calculate QU and QL (Quarter 3 and Quarter 4). On some problems, the book tells me what Q3 and Q4 is, and on...

• Replies: 1
• Views: 3,039
10-20-2006, 08:40 AM
52. ### 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...

• Replies: 1
• Views: 2,156
10-20-2006, 01:18 PM
53. ### should be a simple card problem

I'm having a tough time figuring out what seems to be a simple conditional probability problem. Three cards are drawn from a stadard deck. What is...

• Replies: 2
• Views: 2,382
10-21-2006, 03:51 PM
54. ### How to solve for probability

Sorry, please disregard this question. Help on this problem dealing with probability. Have the answer but not sure how to get to it: Question:...

• Replies: 1
• Views: 1,817
10-21-2006, 10:44 PM
55. ### Probability Help

There are 5 problems I just can't get. The set up is that there are twenty ice cream cones with 5 flavors (cherry, vanilla, chocolate, strawberry,...

• Replies: 0
• Views: 1,939
10-21-2006, 11:07 PM

Page 6 of 91 First 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 56 ... Last

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.

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