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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: 30,234
09-30-2005, 09:44 AM
1. ### Binomial distribution help plz..

A multiple-choice test has 6 questions each with 4 responses, one of which is correct. The lowest number of correct answers a student must obtain in...

• Replies: 2
• Views: 3,987
03-14-2009, 04:15 PM
2. ### Binomial Distribution in Excel

7. An emergency room administrator wants to know the proportion of emergency room patients who spend more than one hour waiting to be seen. He has...

• Replies: 1
• Views: 1,856
03-24-2014, 03:04 PM
3. ### Binomial Distribution Problem

I'm at work, so I don't have the problem verbatim, but it's something like this: Suppose that companies who launch products with revenue growth as...

• Replies: 0
• Views: 3,305
10-23-2006, 08:49 AM
4. ### Binomial Distribution Problem - How to interpret the given information

Your company is running an audit on the Sleaze Company. Because Sleaze has a bad habit of issuing incorrect invoices, the focus of your audit is on...

• Replies: 5
• Views: 8,206
10-04-2011, 01:58 PM
5. ### Binomial distribution problem.

I think this is a binomial distribution problem but I just don't know how to solve it. It gets a bit hard when I have to decide which is x, n or p ...

• Replies: 1
• Views: 2,736
BGM
03-31-2014, 11:54 AM
6. ### binomial distribution question

A currier service receives parcels and forwards them to their destination. The aim is to forward all parcels within 24 hours but is not always...

• Replies: 1
• Views: 2,718
03-28-2006, 04:13 PM
7. ### Binomial Distribution Question

Hey guys, I have a bit of trouble understanding this binomial distribution question According to the call center statistics of a company, on...

• Replies: 5
• Views: 1,871
03-05-2015, 10:43 AM
8. ### Binomial distribution variace q

Given a scenario where there is a true statistic - proportion voting yes in a vote denoted by p ,we sample people from the large population, n . ...

• Replies: 0
• Views: 2,192
09-06-2010, 04:24 PM
9. ### binomial distribution with random p?

I haven't much training in statistics or math in general, but I was playing around with a signalling model I'm building, mostly for fun, and ran into...

• Replies: 2
• Views: 3,008
12-08-2008, 11:42 PM
10. ### Binomial Distribution, 150 tosses of fair coin, P(40%<= X <=50%)

Hi, im getting the wrong answer for the following question and not sure why. (Question) A fair coin is tossed 150 times. Find the probability that...

• Replies: 2
• Views: 2,519
05-10-2012, 07:17 AM
11. ### Binomial distributions

A total of 16 mice are sent down a maze, one by one. From previous experience, it is believed that the probability a mouse turns right is .38 a)...

• Replies: 1
• Views: 4,440
10-12-2012, 09:25 PM
12. ### Binomial Expectation

I'm having a little problem following this Y~Bin(5,1/3) Find: E = E = 4E - 4E - 1

• Replies: 3
• Views: 2,716
02-26-2009, 09:36 AM
13. ### Binomial expected value

I think the answer to this is painfully obvious, but I need to be certain. Consider some binomial distribution where the probability of a single...

• Replies: 1
• Views: 3,137
09-02-2010, 12:08 PM
14. ### Binomial formula - solve for N help ...

Hi, I'm not a student and this is not for a test. I'm a programmer and this is related to the markets. This is a link for the common formula:...

• Replies: 1
• Views: 1,325
03-08-2014, 01:42 AM
15. ### Binomial Formula ?

Hi everyone, I'm absolutely going crazy trying to figure this problem out, and I know the answer LOL..I just can't figure out how they got it. Using...

• Replies: 12
• Views: 3,567
10-19-2008, 10:25 PM
16. ### Binomial MLE

Hello, I need some clarification on the following problem. Suppose Y ~ Bin (189, 59/189) Graphically show the likelihood function and...

• Replies: 1
• Views: 4,471
10-04-2010, 02:25 AM
17. ### Binomial Model?

Hello, Would appreciate any help with the following question.. A shoe store's records show that 30% of customers making a purchase use a credit...

• Replies: 5
• Views: 2,611
09-05-2006, 08:35 AM
18. ### Binomial Probabilities

These kinds of questions can be answered using the binomial probability distribution: 1. If I flip a coin 20 times, what is the probability of...

• Replies: 0
• Views: 48,964
11-01-2005, 02:50 PM
19. ### Binomial probability

Hi, I have the following problem. We are comparing two screening methods in one population. With method A we took 63 samples and 13 were...

• Replies: 2
• Views: 3,053
01-25-2006, 07:30 AM
20. ### Binomial probability

Hello!! My question is: Only 30% of the people in a large city feel that mass transit system is adequate. If 20 different persons are selected at...

• Replies: 11
• Views: 4,145
03-10-2012, 06:57 PM
21. ### binomial probability

ok so here is the question i attempted but no getting the answer a loan officer has indicated that 80% of all loan application forms have zero...

• Replies: 0
• Views: 2,414
03-19-2012, 06:48 PM
22. ### Binomial Probability

problem solved :)

• Replies: 0
• Views: 1,401
08-24-2012, 11:39 PM
23. ### Binomial probability

A number of trials were run with a high success rate, n = 1700 & 99.9% success How can I calculate (with 95% confidence) the lowest probability of...

• Replies: 8
• Views: 1,876
05-15-2013, 06:24 AM
24. ### Binomial Probability

I am trying to figure out how many possible combinations there are for a 10 question survey that has yes or no answers. I tried writing out a sample...

• Replies: 1
• Views: 1,146
01-30-2014, 10:46 AM
25. ### Binomial Probability (Elementary Statistics)

Hi, I was hoping someone could explain this to me. I've tried online tutoring, and honestly it doesn't seem like they know what their doing. My...

• Replies: 0
• Views: 1,066
02-13-2014, 11:10 PM
26. ### Binomial Probability Distributions

I am having alot of difficulty in my bio-statistics class can anyone help with these 2 questions? Create pmf and histogram before answering these...

• Replies: 1
• Views: 4,673
BGM
10-06-2009, 01:08 PM
27. ### Binomial probability problem

I have a problem working out the answer to this problem using the binomial formula. Assume an airline operates a short haul flight form Edinburgh...

• Replies: 4
• Views: 3,278
08-04-2010, 10:57 AM
28. ### binomial probability question

The probability of having a boy = .51 and the probability of having a girl = .49. Find the largest number, "x," that will make this statement...

• Replies: 6
• Views: 3,570
10-14-2009, 10:18 PM
29. ### Binomial probability question

Hi all, I have been stumped on this binomial probability question and was wondering if anyone can help me get started: I was thinking...

• Replies: 2
• Views: 1,870
12-04-2013, 02:48 PM
30. ### Binomial probability with another aspect?

Assume that the orange widgets are produced independently of each other with the probability of an individual orange widget being good being equal to...

• Replies: 4
• Views: 1,149
01-22-2013, 05:47 PM
31. ### Binomial Probability, Real Limits, X=0

Can someone have guessed on quiz and got all 50 questions wrong, but still get 100%? Thanks in advance! :D

• Replies: 7
• Views: 4,437
BGM
10-16-2011, 04:36 PM
32. ### Binomial probablity

According to National Highway traffic Safety Administration 66% of California motorists use seat belts. Find the probablity that in one group of 12...

• Replies: 1
• Views: 2,795
12-27-2006, 12:20 AM
33. ### Binomial Probablity Distribution exactly one & and at least one.. check my answer

Your favorite baseball player has a 0.300 batting average (that is, he averages three hits for every 10 times he is up to bat). If he is up to bat...

• Replies: 3
• Views: 2,415
10-11-2016, 02:35 PM
34. ### Binomial Question

Current medical studies indicate that 30% of the population will suffer from the flu each winter. A group of 12 people is randomly selected. a....

• Replies: 3
• Views: 2,411
12-02-2009, 08:08 PM
35. ### Binomial question?

I have this question that I think is binomial probability. Bananas that are almost ripe to pick carry the chance of being 15% rotten. What would be...

• Replies: 4
• Views: 1,624
07-21-2015, 12:32 PM
36. ### Binomial Random Variable

A study of gambling activity at the university of west georgia discovered that 60% of the male students wagered on sports the previous year. Consider...

• Replies: 1
• Views: 3,085
10-18-2008, 06:54 PM
37. ### binomial random variable

I'm having trouble understanding how I'm supposed to answer part a of this question I'm on. I was able to do b, c, d, and e though. Problem: The...

• Replies: 0
• Views: 3,141
03-17-2014, 02:46 PM
38. ### 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...

• Replies: 1
• Views: 2,285
02-17-2012, 07:34 PM
39. ### Binomial random variable proof

Hi guess, the question asks If X is a binomial random variable with parameters n, and P, where 0< p < 1, show that a) P(X=k+1) =...

• Replies: 2
• Views: 3,502
06-26-2011, 08:56 PM
40. ### Binomial random variable question

I have this question that is driving me batty & I cannot figure it out. I'm taking entry level stats online & have driven to the campus a few times...

• Replies: 5
• Views: 5,337
06-16-2009, 09:34 PM
41. ### Binomial Test in Excel

What is the probability of getting AT LEAST 79 out of 90 correct on a True or False test if you are guessing on every question? I think I need to...

• Replies: 0
• Views: 2,292
12-06-2014, 04:46 PM
42. ### Binomial variability

Hi, I have in my research 45 children who took a test twice and the score is either (correct or incorrect). I calculated confidence intervals for...

• Replies: 0
• Views: 1,163
05-19-2013, 02:25 PM
43. ### Binomial, did I solve correctly ?

Hi guys, can you please tell me if I am anyway right with this ? The price of a cake of kind A is 15\$. The price of a cake of kind B is 10\$. The...

• Replies: 3
• Views: 2,367
02-26-2011, 11:18 PM
44. ### Binomial/geometric distributions

Which of the following are true statements? I. The histogram of a binomial distribution with p=0.5 is always symmetric II. The histogram of a...

• Replies: 6
• Views: 5,618
BGM
03-07-2011, 03:21 AM
45. ### Binomialdistribution

The question is as follows: In a carnival game, a person can win a prize by guessing which one of 5 identical boxes contains the prize. After each...

• Replies: 0
• Views: 5,456
10-24-2006, 12:27 PM
46. ### 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...

• Replies: 3
• Views: 1,162
11-30-2013, 04:39 AM
47. ### Binominal Distribution (urgent)

kindly help (or provide hints) on below question: Suppose that you pay \$1024 to enter a coin tossing game. A biased coin with head probability...

• Replies: 5
• Views: 2,386
BGM
10-16-2014, 12:48 AM
48. ### Binominal vs Geometric.....confused!!!!

Hi there, I am currently working on these questions but I don't really get how to work them out. Is it wrong to use the binomial distribution for a)...

• Replies: 0
• Views: 3,833
10-23-2011, 01:13 PM
49. ### bins and balls

Working a problem from a text that asks if you have n balls and place them in n bins, what is the probability that exactly one bin remains empty. ...

• Replies: 0
• Views: 2,635
07-12-2012, 10:44 PM
50. ### bio stats probability basic problem

: Biostatistics problem. Probability of obtaining positive test results in a diagnostic method. Hello: I have a biostatistics/probability...

• Replies: 9
• Views: 2,146
06-23-2013, 09:31 AM
51. ### Bionomial Distribution question

Am I on the right track or close????? I have been working all day to figure this question out If 60&#37; of voters favor new ball park: A. If...

• Replies: 2
• Views: 2,827
04-19-2009, 11:07 PM
52. ### Bionomial distribution:expected value problem question

: The FBI Standard survey of crimes shows that for about 80% of all property crimes, the criminals arenever found and the case is never solved....

• Replies: 3
• Views: 4,687
10-08-2012, 04:48 AM
53. ### birth defects - probability

I am new and really stuck with this one: Analyzing cases of a rare congenital defect>>>>>>>>>>>>> • 1 female in 30 in the population carries the...

• Replies: 3
• Views: 5,820
04-25-2008, 01:26 PM
54. ### birthday coincidence

Hi, I'm wondering if anyone can help with something that's been puzzling my family for years. I have 3 sons, 2 from my first marriage and one from...

• Replies: 10
• Views: 2,726
08-17-2011, 02:24 PM
55. ### Birthday problem

ignore this, I have solved the problem

• Replies: 0
• Views: 2,435
11-25-2006, 12:52 AM
56. ### Birthday Problem

I understand the math behind the birthday problem However, intuitively, I don't quite understand why the percentages don't go up linearly? For...

• Replies: 1
• Views: 3,183
06-17-2008, 11:16 AM
57. ### Birthday Problem

Can anyone help me with these questions? I am new in probability and i even don't know where to start..:( (1)What is the minimum number of people...

• Replies: 5
• Views: 3,760
09-20-2009, 04:57 PM
58. ### Birthday Problem

This is not the traditional birthday problem. Lets say I have 657 friends. What are the odds that none of them have a birthday today? This...

• Replies: 3
• Views: 1,791
06-13-2012, 09:00 PM

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