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# 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: 30,193
09-30-2005, 09:44 AM
1. ### Emperical Rule

In finding the upper and lower bound with 95% confidence, I input numeric data and use descriptive stat on excel for mean and standard deviation....

• Replies: 0
• Views: 2,829
10-21-2016, 11:21 PM
2. ### MSc Research Probability Survey

Hi all, i'm currently in year 2 of a part-time MSc by research into Causal Bayesian Networks at York university; and as part of the study i'm...

• Replies: 0
• Views: 1,405
09-28-2016, 01:52 PM
3. ### Racing

Hi all, I need some help with some statistical work: So, I am trying to understand how I can transform time into probability. I have 2...

• Replies: 0
• Views: 2,100
10-03-2016, 08:48 AM
4. ### Markov probability and stock return

Suppose I have a stock that in in each timeperiod gives a return depending on the state s. Assume that the process starts in s_1 and gives the return...

• Replies: 0
• Views: 1,707
10-06-2016, 07:38 AM
5. ### Conditional Monthly Risk Calibration for a trading model

Hi, I have a trading system with a portfolio of assets (long and shorts) with daily market returns. I want to overlay a risk management to my...

• Replies: 0
• Views: 2,071
10-13-2016, 12:13 PM
6. ### NFL Win Probabilities

Check out this site that keeps track of all the probabilities of the big NFL stat models: http://trevorbischoff.com/2016-amos-nfl-predictions/

• Replies: 0
• Views: 3,584
10-19-2016, 04:45 AM
7. ### Probibilities on opening hand at bridge

Hi all bridge lovers! Bridge is a wonderful and very complex card playing game with thousands of books written about it. For those who do not...

• Replies: 0
• Views: 1,908
10-25-2016, 02:56 PM
8. ### Roulette Probabilities

Did it wrong... delete

• Replies: 0
• Views: 2,922
10-30-2016, 06:53 PM

Hi everyone, I joined the forum just to ask this question about one issue I'm having with probability. Your help is much appreciated. I already...

• Replies: 0
• Views: 2,400
11-01-2016, 09:21 PM
10. ### Probability of observing mean difference/compute ranksum

Hi everyone, would appreciate some help on these three questions. If possible with calculations so that I can understand more easily! Suppose the...

• Replies: 0
• Views: 3,350
11-10-2016, 03:07 PM
11. ### Resulting expected value of a bounded exponential pdf

I need to determine the distribution function of an exponential random variable with mean 2, given that its outcome is larger than 2 and give the...

• Replies: 0
• Views: 2,548
11-14-2016, 01:44 PM
12. ### The probability that I am missing only one tile

Background I recently became fascinated (really!) in this probability problem. I have done quite a bit of work to figure out the answer...

• Replies: 0
• Views: 2,028
11-14-2016, 10:38 PM
13. ### Sudokua problem using related binomial distribution

It is given: If you succeed to solve a Sudoku with probability 0.4 and you try many times, how likely is it that you succeed twice before you...

• Replies: 0
• Views: 2,550
11-15-2016, 07:51 AM
14. ### Probability from sample and sub-groups

Greetings! I was trying to determine probability of soccer tryout success. In Maryland, there are 5,300 boys in this group. There are 320 teams...

• Replies: 0
• Views: 2,943
11-15-2016, 01:51 PM
15. ### Two approaches to the same problem in probability

Hello all I have this question: Two basketball players shoot the ball. The probability of the first one to succeed is 0.8, and the probability...

• Replies: 0
• Views: 2,566
11-19-2016, 03:01 AM
16. ### S1 Statistics question help! Majorly stuck

Hi I have 3 statistics questions that I would like help with, 1. When Albert eats in a certain restaurant, he always eats either chicken or beef...

• Replies: 0
• Views: 2,683
11-24-2016, 02:18 PM
17. ### Computer game log normally distributed

I'm playing a computer game and I want to boost the high score. I assume that attempts are independent (say, you do not improve by playing), and in...

• Replies: 0
• Views: 2,220
11-29-2016, 03:45 PM
18. ### statistic question help

hello :) really need help with something. If person A makes an event once every 50 days, and person B makes an event once every 30 days (the...

• Replies: 0
• Views: 2,034
12-02-2016, 10:12 AM
19. ### Probability Q help, uses combinatorics, Poisson-Distr and possibly Multinomal

Place successively and independent of each other 20 particles into 10 boxes. Hereby, each of the 10 boxes is chosen with the same probability. a)...

• Replies: 0
• Views: 2,156
bkc
12-10-2016, 03:05 PM
20. ### Train car: probability to have a seat

A train has got five train cars, each one with N seats. There are 150 passengers who randomly choose one of the cars. What is the probability that...

• Replies: 0
• Views: 1,894
01-13-2017, 01:39 PM
21. ### decile

hi experts. I 'd like to ask about cluster analysis. to identify the group of customer that which group will have high potential to cancel the...

• Replies: 0
• Views: 679
05-27-2017, 11:34 PM
22. ### picking a present box with more than one characteristicss

I have a probability problem which is simplified as following, I need to check if my solution is true: If there is a bag contains 20 of small...

• Replies: 0
• Views: 2,199
12-20-2016, 06:11 AM
23. ### Total and quadratic variation of a function

Let f(x)= x2−3, for x<3, x2+3, for x≥3 I need to determine the total variation and the quadratic variation of f(x) on the interval . For...

• Replies: 0
• Views: 2,701
12-17-2016, 10:23 AM
24. ### Hypothetical example of using probability to control emotions in business

Imagine a company where there are two principals. The first person is the founder and owner of the company. The second person is nearly a partner...

• Replies: 0
• Views: 760
04-16-2017, 05:23 PM
25. ### Hypothetical draft lottery

I was trying to devise an equitable MLB draft lottery system which reduces the benefit of "tanking" but heavily weighs record and has a slight...

• Replies: 0
• Views: 2,732
12-27-2016, 12:18 PM
26. ### What will be the Probability?

If a treatment for cancer has 90% success rate, the remaining 10% die. If two patients come for treatment, what is the probability that one will die?

• Replies: 0
• Views: 1,977
01-30-2017, 01:34 PM
27. ### Probability of Horse Racing (odds aside)

Hello In a 10 horse race - if I select two horses in the same race to run either 1st , 2nd or 3rd what are the odds of - one of the horses...

• Replies: 0
• Views: 2,987
Mij
01-29-2017, 12:00 AM
28. ### Simple Z score probability

QUESTION: The monthly sales of mufflers follow the normal distribution with a mean of 1350 and a standard deviation of 250. The manufacturer...

• Replies: 0
• Views: 1,526
01-29-2017, 04:34 PM
29. ### Dice Total Odds Calculator

I have posted a calculator to the Google Play Store for computing the probability of obtaing a particular sum when throwing dice:...

• Replies: 0
• Views: 1,715
01-29-2017, 06:32 PM
30. ### Pro / Stat Problems HELP!!!

In many cases, you can model a binary communication system as follows. A 0 or 1 is chosen as the message and the transmitter sends a signal over a...

• Replies: 0
• Views: 1,676
01-29-2017, 08:56 PM
31. ### Warning: I know next to nothing about stats and have a question on sample selection

Hi everyone, I am not sure if I can even articulate my problem clearly, but I need some feedback on whether my concern is valid. In order to...

• Replies: 0
• Views: 2,889
01-06-2017, 08:40 PM
32. ### Maximum likelihood estimation for exponential distribution

I would like to describe some gathered data for arrival process which seems not following Poisson distribution for people finding a job. The data...

• Replies: 0
• Views: 2,273
01-07-2017, 09:22 AM
33. ### For the following example, is order meaningful or not?

Consider a hypothetical example. There are 12 tickets for a documentary film and exactly 12 people to buy the tickets (one person can buy only one...

• Replies: 0
• Views: 1,593
01-19-2017, 10:24 PM
34. ### Probability advice for a rpg

Hello everyone ! The question I have will look a lot like a math problem, and I have to say, if I was a lath teacher, I would use problems like...

• Replies: 0
• Views: 1,758
01-21-2017, 10:23 PM
35. ### NCA Office Pool Win Probability

Hello, I run a small NCAA office pool website where folks make predictions about the outcome of each game in a 64-team tournament that consists of...

• Replies: 0
• Views: 3,019
12-19-2016, 02:12 AM
36. ### Probability

(This is a question on probability, not a discussion on politics. Hate or love the President, I hope you all can respond with a mathematical...

• Replies: 0
• Views: 1,855
02-13-2017, 07:27 AM
37. ### A random variable's median and variance.

-Part a) A box from 0 to 1 of height 1. What is its median ? Interpretation/Attempt: A random variable, X, is uniform, (So that its density is...

• Replies: 0
• Views: 1,723
02-09-2017, 05:43 AM
38. ### Arrival time

Suppose there are five people, let t1 be the first arrival time which van be computed from min{X1,...,X5} t2 is the time of the next and so on. and...

• Replies: 0
• Views: 2,064
01-17-2017, 05:37 AM
39. ### Probability of H/T Score AND F/T Score Being Specific Scores...

Hi All, Just trying to answer something in my mind... If I had calculated (using poisson) the chances of various scores occurring in a football...

• Replies: 0
• Views: 498
05-30-2017, 05:01 PM
40. ### Probability of Sampling Error Assistance

Hello! I am working on a mini project and am stuck on the third question! I think it's how the question is phrased that is throwing me off..? I...

• Replies: 0
• Views: 778
05-30-2017, 11:36 PM
41. ### Sales Probability

First post on this forum so I hope to explain my question appropriately. Our company issues catalogs to 3,000 customers. The products in this...

• Replies: 0
• Views: 153
09-29-2017, 09:01 AM
42. ### calculate intersection sets of cell clones in samples?

Is it possible to calculate the probability of intersection sets in this setting? I have 44000 different cell clones in sample O, I donīt know how...

• Replies: 0
• Views: 367
07-27-2017, 06:58 AM
43. ### Ranking products according to their price and probability of sale

Hello! I have little knowledge of statistics/probability theory, so please bear with me. I was wondering about the following: I have a bunch...

• Replies: 0
• Views: 101
09-27-2017, 08:57 AM
44. ### Measuring strentgh of competing teams

The average number of goals scored per match by Team A when playing on home ground is 2.2 with a standard deviation of 1.3 while the average number...

• Replies: 0
• Views: 114
10-10-2017, 10:53 AM

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