Search: maths/probability

Number of results: 17,903

Maths
Say the probability he'll pass English is Prob(E) = 0.6. The probability he'll pass in both English and Maths is Prob(E&M) = 0.54. Provided the probability that he'll pass English is independent of the probability that he'll pass Maths (and note that's ...
Monday, May 2, 2011 at 12:56pm by David

probability
among the exames in the examination 30%, 35% & 45% failed in statistics, in maths, & in atleast one of the subjects respectively. one student is selected at random. find the probability that: (a)he has failed in maths, (b)he passed in statistiics if it is known that he...
Wednesday, October 27, 2010 at 12:32am by hhhh

maths-probability
A family has four children. The probability of having a girl is 1/2. What is the probability of having 2 girls followed by 2 boys?
Wednesday, April 16, 2008 at 9:26am by louis

probability maths
Jim rolls a dice twice. The dice is biased so the probability of getting a six is one quarter. WHat is the probability that he gets two sixes
Saturday, January 30, 2010 at 4:51am by Latika

maths
At least C = A, B or C Either-or probability is found by adding individual probabilities. At most C = F, D or C Is there no probability of getting an F? P(F) = 1 - .2 - .3 - .15 - .35 = ?
Thursday, March 10, 2011 at 1:44am by PsyDAG

statistics
among the exames in the examination 30%, 35% & 45% failed in statistics, in maths, & in atleast one of the subjects respectively. one student is selected at random. find the probability that: (a)he has failed in maths, (b)he passed in statistiics if it is known that he...
Wednesday, October 27, 2010 at 12:24am by hhhh

Maths probability
Two Fair Dice are thrown and the differance is noted.Draw the sample space.What is the probability that ther is no differance.
Tuesday, April 15, 2008 at 9:45pm by dan

maths
Three coins are randomly placed into different positions on a 4×10 grid. The probability that no two coins are in the same row or column can be expressed as ab where a and b are coprime positive integers. What is the probability of a+b?
Monday, April 1, 2013 at 5:44am by rohit

maths-urgently needed(probability)
A bag contains 5 red, 4 blue and an unknown number of m green balls. Two balls are drawn. If probability of both being green is 1/7 find m.
Monday, February 18, 2013 at 8:22am by Anonymous

Maths
The probability that Don's car passes the MOT test next time is 4/5, that Mag's car passes is 5/7 and that Joe's car passes is 1/2. Find the probability that a)all three will pass b)just two out of the three will pass c)no car passes? (might need a probability tree...
Monday, February 4, 2008 at 2:34pm by Anonymous

Probability
I will let a = 1/175,711,536= 5.591145*10^-9 , to save typing. The expected number, among 200,000,000, is L = 2*10^8 a = 1.13823 The probability of P(k) of k winners is given by Poisson statistics: P(k) = L^k*e^-L/k! Probability of 0 winners = 0.32039 Probability of 1 winner...
Tuesday, March 18, 2008 at 4:38am by drwls

Maths - Probability q2
Five cards are lettered A, B, C, D, E Three cards are chosen at random one after the other without replacement and are in the order shown below First, Second, Third What is the probability that the cards spell the word BED
Monday, May 13, 2013 at 1:44pm by donald

maths
In a game of skill, a player has probability 1/3,5/12,1/4 of scoring 0,1,2 respectively and the game ends when he scores a zero. Assuming independence of trials, find the probability of the total score being 'n' when the game ends?
Saturday, October 8, 2011 at 4:31am by Saurabh

maths-urgent
a man has 3 unique coins such that the probability of obtaining a head when the coin is flipped is 1 10 , 2 10 and 3 10 , respectively. If he flips each of the 3 coins once, the probability that at least 1 heads appears is p . What is the value of 1000 p ?
Sunday, February 10, 2013 at 5:57am by Anonymous

maths
5) I THINK YOU MEAN 0.7, NOT .7% Do binomial distribution again but this time for 1 out of 6 unoccupied Probability of any box being empty = .3 Probability of exactly 1 out of 6 being empty = C(6,1)(.3)^1 (.7)^5 = 6 * .3 * .16807
Wednesday, June 3, 2009 at 6:40pm by Damon

statistics/probability
1. The probability that a student passes mathematics is 2/3 and the probability that he passes biology is 4/9. If the probability of passing one course is 4/5, what is the probability that he will pass both courses?
Saturday, October 23, 2010 at 5:30pm by Anonymous

maths-probability
Thank You
Wednesday, April 16, 2008 at 9:26am by louis

Maths probability
Thanks
Tuesday, April 15, 2008 at 9:20pm by louis

maths!
6) There are three research and development projects focusing on the development of three new products A, B and C. The markets into which the new products are to be launched are identical. However, consumer preference is at present, unknown. A probability assessment has been ...
Wednesday, December 9, 2009 at 7:26am by mozza

Maths
1)A two-figure number is written down at random. Find the probability that a)the number is greater than 44 b)the number is less than 100 2)A letter is picked at random from the english alphabet. Find the probability that a)the letter is a vowel (my answer=5/26) b)the letter ...
Monday, January 28, 2008 at 2:59pm by Anonymous

probability maths
1/4 x 1/4 = ___
Saturday, January 30, 2010 at 4:51am by drwls

maths - Probability
Thanks a lot
Wednesday, April 16, 2008 at 9:19pm by matty

maths-probability
Thanks a lot
Wednesday, April 16, 2008 at 9:24am by louis

Maths probability
idk
Tuesday, April 15, 2008 at 9:45pm by Nicole

Maths probability
1/1000
Tuesday, April 15, 2008 at 9:20pm by 1969

maths
he has a probability of 1:19?
Thursday, October 25, 2007 at 8:11pm by Audrey

Maths
There are 4 students in a class. A teacher wants them to each secretly choose a partner for a group project. If everyone independently choses a partner randomly, the probability that everyone choses a partner who chose him/her is P. What is the value of 1/P?
Wednesday, May 1, 2013 at 11:15pm by Maths lover Please Help...

statistics
The below table shows the probabilities generated by rolling one die 50 times and noting the up face. What is the probability of getting an odd up face? roll 1 Probability 0.22 roll2 probability 0.10 roll 3 probability 0.18 roll 4 probability 0.12 roll 5 probability 0.18 roll ...
Thursday, May 3, 2012 at 8:05pm by sc

maths
The probability that Katarina will correctly solve a given Brilliant math problem is 1/8. The probability that Layla will solve the same problem correctly is 1/12. The probability that they will give the same incorrect numerical result is 1/1001. Suppose Katarina and Layla ...
Monday, April 1, 2013 at 5:48am by rohit

Maths - Probability
Tickets numbered 1 to 1000 were sold in a raffle for which there was one prize. Mr Kahn bought all the tickets containing at least one '3' because '3' was his lucky number. What was the probability of Mr Kahn winning?
Saturday, December 4, 2010 at 4:21am by Paige

maths-probability
plse explain me again..
Tuesday, December 4, 2012 at 6:18am by Meenakshi

maths-probability
Prob(GGBB) = (1/2)*(1/2)*(1/2)*(1/2) = 1/16
Wednesday, April 16, 2008 at 9:26am by Reiny

statistics
in a class of 40 student,18 pass maths, 19 pass account,16 pass economics 5 pass maths and account only, 6 pass maths only, if each student pass at least one of the subject.find the percentage number who fail in at least one of economics and maths. how many student fail in all...
Wednesday, October 5, 2011 at 1:27am by kenneth

MATHS
WHAT DOES THEORETICAL PROBABILITY MEAN HOW DO I WORK IT OUT?
Saturday, March 1, 2008 at 4:18pm by Rosh

math probability
this is a probability question... Suppose you are asked to choose a whole number between 1 and 13 inclusive. (a) what is the probability that it is odd?...7/13 (b) What is the probability that it is even?...6/13 (c) what is the probability that it is a multiple of 3?...4/13 (d...
Thursday, December 18, 2008 at 12:22am by joe

Maths
the ratio of probability of 3 successes in 5 independent trials to the probability of 2 successes in 5 independent trials is 1/4. What is the probability of 4 successes in 6 independent trials?
Tuesday, May 15, 2012 at 9:40am by Vishwan Merchant

Math
In an experiment, the probability of the event E is known to be .4. Also the probability of the event F is .8,and the probability of E∪F is 1. i) Compute the probability of these events: P(E∩F)= P(E-F)= ii) Suppose the experiment is run twice in succession...
Thursday, April 21, 2011 at 6:55pm by Tracy

maths-probability
9x9x9 cubes are left and 1000 - 9^3 fall.,o
Tuesday, December 4, 2012 at 6:18am by drwls

Finite Math
An urn contains sixteen red balls and seventeen white balls. A sample of three balls is selected at random and the number of red balls observed. Determine the probability distribution for this experiment: Number of Red Balls/Probability 0...Probability=? 1...Probability=? 2......
Thursday, April 5, 2012 at 12:28am by Amanda

maths
Oh, and subtract that from one to get the probability of 1, 2, 3, 4 or 5 being occupied, but not all six.
Wednesday, June 3, 2009 at 6:40pm by Damon

math-probability
The Probability that Jodi makes a basket when playing basketball is .50, Jamal’s probability is .80 and Pat’s is .75. What is the probability that all three make a basket?
Monday, November 30, 2009 at 6:55pm by GG

maths
Pr(6 )=(1/6)*6*(5/6)^5 which is the probability of getting a six in the first six rolls( there are six ways to do it, that accounts for the 6. The same probability for the next six rolls, so Pr(6,6)=((1/6)*6*(5/6)^5 )^2=(5/6)^10=.161 So there is a .161 probability of getting ...
Saturday, April 27, 2013 at 3:17am by bobpursley

Math Probability
If the probability that event A will happen is 1/4 and the probability of A not happening is 3/4, find the probability that event A happens 3 times out of 7 experiments
Monday, April 16, 2012 at 2:03pm by Antonio

maths
A 3 digit natural number is selected at random .Find the probability that it is divisible by 2 but not by 3?
Monday, January 14, 2013 at 10:45am by Anonymous

Maths probability
999:1000 i think IM NOT SURE tho... sorry
Tuesday, April 15, 2008 at 9:20pm by kristina

Maths- Probabilty
We do not do your homework for you. However, I will give you a start. i) The probability of picking a first gold marble is 5/8, since there are 5 gold marbles among the eight total. If you do not replace it, 4 gold marbles are among the remaining 7. The probability of two or ...
Friday, February 19, 2010 at 2:55am by PsyDAG

algebra 2
What you are being asked is what is the probability of getting 3 and 5 or two 4s on the next roll. On the second problem, the probability of getting a 3 is 1/6 and "anything else" is 1. With the information below, you should be able to calculate the probability of a ...
Tuesday, March 10, 2009 at 9:40am by PsyDAG

Math
The probability of a head on each toss = .5 or 1/2. The probability of getting a 4 is 1/6. The probability of all the events occurring is found by multiplying the probability of the individual events — 2 coin tosses and one roll of the die. I hope this helps. Thanks for ...
Wednesday, June 17, 2009 at 8:33pm by PsyDAG

Maths
whats the probability of gatting a matching pair of socks if there are 8 gree and 10 blue
Friday, September 7, 2012 at 1:30pm by callum

maths
from a batch of 10 eggs 3 are rotten.2 eggs are selected in succession.Find the probability that(a)both are rotten (b)only 1 is rottewn and at least 1 is fresh. b) Probability(1rotten, 1fresh)=3/10*7/9 Notice how the probabality after drawing one rotten, the fresh egg ...
Wednesday, June 6, 2007 at 8:53am by CELINA

probability
ok but how do i find the final probability? i see how i can get the probability of a certain combination, but i don't understand how i can find that end probability.
Sunday, February 28, 2010 at 1:55pm by Ryan!

math
However, the probability of getting 5 (or any other number 1-6) on a die is 1/6. The either-or probability is found by adding the probability of individual events. The sum of both dice = 5 can be obtained by 1, 4 4, 1 2, 3 or 3, 2 The probability of getting any one of these ...
Saturday, April 25, 2009 at 9:28pm by PsyDAG

math-Probability
In a certain manufacturing process the probability of a type I defect is 0.21, the probability of a type II defect is 0.31, and the probability of having both types of defects is 0.01. Find the probability of having neither type of defect.
Friday, March 16, 2012 at 11:59pm by Emma

probability
One chip drawn would have to be 5 and that probability is 1/8. The probability that a second drawn chip is not larger than 5 is 4/7. The probability of the third chip not being larger than 5 is 3/6, or 1/2. This is true regardless of the order they are drawn. Total probability...
Friday, June 24, 2011 at 6:15pm by drwls

maths-probabilty
The probabilities for drawing a red ball from a particular bag are: P(red|bag1) = 3/5 P(red|bag2) = 5/9 The conditional probability that a variable X takes some value given that another variable Y takes some value, denoted as P(X|Y) is related to the joint probability as ...
Wednesday, March 20, 2013 at 1:07pm by Count Iblis

Intro to Probability
For firm 1 Probability of getting contract a only = probability of getting a - probability of getting both = 1/3 - 1/9 = 2/9 Probability of getting contract b only = 2/9 Probability of getting a and b both = 1/9 so E($) = (4/9)90 k + (1/9) 180 k = 40 + 20 = $60 K
Saturday, February 23, 2008 at 7:14pm by Damon

probability maths
If the probability of getting a six is 1/4, that means that there is something wrong with the die. It is "loaded", as they say, or biased. This article explains how they do it: http://en.wikipedia.org/wiki/Dice#Loaded_dice
Saturday, January 30, 2010 at 4:51am by drwls

discrete probability distribution (help please!)
Add the probabilities that 0, 1, 2 or 3 components have failed. That sum will be the probability that the machine works. The probability that none have failed is P(0) = 0.8^7 = 0.210 The probability that one part has failed is P(1) = 0.8^6*0.2*7 = 0.367 The probability that ...
Monday, April 12, 2010 at 9:52pm by drwls

Statistical Methods
To get the probability that all events would occur, you need to multiply the probability of each of the individual events. The probablitiy of no rainy days is .8^15. The probability of one rainy day is .2 * .8^14. The probability of two rainy days is .2^2 * .8^13. The ...
Tuesday, March 11, 2008 at 11:31pm by PsyDAG

maths probability...
I can't answer this exam question! Please help me: Jodie and Karen play a game with a pack of 40 numbered cards. There are four cards with each number from 0 to 9. Jodie picks a card and keeps it. Karen then picks a card. What is the probability that they both pick a ...
Wednesday, May 30, 2007 at 4:43am by jaffacakes

Math
3 and 6 are multiples of 3. The probability the either one or the other events would occur is obtained by adding the probability of the individual events. Probability = 1/6 + 1/6 = 2/6 = 1/3 2, 4 and 6 are even numbers = 1/6 + 1/6 + 1/6 = 3/6 = 1/2 The probability that both/...
Saturday, June 13, 2009 at 12:20pm by PsyDAG

Maths
There is exactly the same number of lollies in 10 different colours in a jar. (If one lolly is picked out , the probability of
Monday, February 22, 2010 at 2:38am by Maria

statistics
For any married couple who are members of a squash club, the probability that the husband has a degree is 2/4 and the probability that the wife has a degree is 1/4. The probability that the husband has a degree given that his wife has a degree is 3/9. A married couple is ...
Saturday, December 3, 2011 at 8:23pm by Nabiha

Probability
On a single toss of a pair of dice, the probability of getting a seven are 1/6. For three consecutive tosses of 7, the probability is (1/6)^3 = 1/216
Sunday, February 20, 2011 at 11:11pm by drwls

Math
A spinner has numbers 1-16 on it. Probability of 6? 1/16 Probability not 6 15/16 Probability even number 8/16 Probability multiple of 3 5/16? Probability not a multiple of 3 11/16?
Wednesday, November 28, 2012 at 6:07pm by Jerald

maths-probability
The diagram shows a spinner with six numbered sections.(where it has number 2 twice, # 1 triple & # 6 once ) Some of the sections are shaded. Each time the spinner is spun it stops on one of the six sections. It is equally likely that it stops on any one of the sections. (...
Saturday, March 17, 2012 at 10:32am by pooja

math
probability of one 5 = 4/52 probability of two 5s = 4/52*3/51 probability of three 5s =4/52*3/51*2/50 probability of four 5s=4/52*3/51*2/50*1/49 so probability of at least one 5 = sum of all those subtract that from 1 to get the probability of none.
Thursday, July 29, 2010 at 12:24am by Damon

probability
Another way to compute this is by counting the number of ways you can make the three numbers diffrent. If you choose X first, then you have 6 choices for X. If Y is next then there are 5 choices for Y lft and 4 for Z. So, there are 6*5*4 possibilities. The probablity of any ...
Tuesday, November 20, 2007 at 2:36am by Count Iblis

COLLEGE MATH
The probability of picking the first number correctly is 1/56, since zero is included. Since the numbers are not replaced, the probability of the second is 1/55, the third, 1/54 and so on. The probability of all events occurring is obtained by multiplying the individual ...
Wednesday, April 22, 2009 at 8:18pm by PsyDAG

probability
The probability that a bus will arrive late at the civic center is. 35, and the probability that it will be on time or early in. 60. Explain why the statement is incorrect.
Sunday, December 12, 2010 at 11:04am by Sherice

12th grade
one type of probability used everyday is: a)experienced probability b)scientific probability c)frequency of occurence d)none of the above
Wednesday, December 15, 2010 at 9:20pm by david

Maths
Two players each flip a fair coin. The probability that they get the same result can be expressed as ab where a and b are coprime positive integers. What is the value of a+b?
Wednesday, April 10, 2013 at 7:31am by Ian

maths
a pair of dice is thrown ...find the probability of getting 7 as the sum if it is knwn that second die is always exihibts a prime number
Monday, December 31, 2012 at 12:27pm by Anonymous

maths - pls check answer
. A single die is rolled one time. Find the probability of rolling an odd number or a 6. 3/6 + 1/6 = 4/6 = 2/3 = .667
Wednesday, April 16, 2008 at 10:28pm by matty

maths
In the finals of a rugby tournament, two teams play a best of 5 series. Each team has a probability of 1/2 of winning the first game. For each subsequent game, the team that won the previous game has a 7/10 chance of winning, while the other team has a 3/10 chance of winning. ...
Friday, February 15, 2013 at 6:41am by Anonymous

maths
The probability that Richard beats John at badminto is 0.7. The probability that Richard beats John at sqaush is 0.6. These events are independant. Calculate the probabilty that, in a week when they play one game of badminton and sqaush: a) Richard wins both games b) Richard ...
Thursday, April 22, 2010 at 2:35pm by nabiha

UET Peshawar
P[C.S]=270/500 P[Maths]=345/500 P[C.S ∩ Maths]=175/500 ( P[C.S U Maths] )' = ? ANS. ( P[C.S U Maths] )' = 1-P[C.S U Maths] =1-{P[C.S] + P[Maths] - P[C.S ∩ Maths]} =1-{270/500 + 345/500 -175/500 } =1-{440/500} =1-0.88 =0.12
Friday, June 3, 2011 at 2:53pm by Sheraz

probability-April
The probability that a student passes Mathematics is 2/3 and the probability that he passes English is 4/9. If the probability that he will pass at least one subject is 4/5, then what is the probability that he will pass (i) Both the subjects? (ii) Exactly one of the subjects...
Thursday, April 18, 2013 at 10:08am by Anonymous

probability maths
thought so thanks does that mean definetly getting one six is a one quarter
Saturday, January 30, 2010 at 4:51am by Latika

PROBABILITY
This is the probability of selecting one lucky and two unlucky tickets. The probability of all events occurring is found by multiplying the individual probabilities. 3/10 * 7/9 * 6/8 = ?
Wednesday, October 20, 2010 at 2:57pm by PsyDAG

maths
The probability of getting a blue ball is 2/3 from a bag containing 6 blue and 3 red balls. 12 red balls are added to the bag then find the probability of getting a blue ball
Thursday, March 10, 2011 at 1:56am by susan

math
Each letter has a probability of 1/26 and the numeral has a 1/10 probability. Multiply the eight probabilities and the denominator of the product will be you answer for a. The probability for "math4you" is the above product. The probability for "math" = (1/...
Tuesday, February 26, 2008 at 4:03pm by PsyDAG

statistics
The probability of drawing an Ace is 4/52, while the probability of drawing some other card is 48/52. The probability of all events occurring is found by multiplying the probability of the individual events. I hope this helps.
Tuesday, January 26, 2010 at 7:02pm by PsyDAG

maths
A letter is picked at random from the English alphabet. Find the probability that the letter : a) Appears in the word GEOMETRY
Wednesday, May 22, 2013 at 4:38am by arzam

maths - Probability
Expected winnings = 1/1000(750) = .75 So you bet $1.00 to win $0.75 , mmmhhh!
Wednesday, April 16, 2008 at 9:19pm by Reiny

math-binomial prob
Use the binomial theorem to get the possibility of 0,1,2,3,4 and 5 correct. For zero correct, the probability is just (3/4)^5 = 0.2373. 3/4 is the probability of getting each one wrong. For five correct, the probability is (1/4)^5 = 0.0001 For one correct, (one success and 4 ...
Friday, December 14, 2007 at 12:44pm by drwls

algebra
a basketball player shoots 70% of freethrows he has a 1 an 1 what is the probability of him shooting o,1,2 points * algebra - bobpursley, Sunday, January 2, 2011 at 12:41pm Pr(0)=.3 Pr(1)= .7*.3 pr(2)=.7*.7 ---------------------------------- * means times, multiply probability...
Sunday, January 2, 2011 at 2:47pm by Damon

Maths
If two six-sided dice are rolled, the probability that they both show the same number can be expressed as ab where a and b are coprime positive integers. What is the value of a+b?
Wednesday, April 10, 2013 at 7:35am by Ian

Math
Make a complete re search project on maths is interconnected with other subject i.e. Maths Vs computer using art with maths.
Tuesday, June 5, 2012 at 4:01pm by Shivansh Tomar

Maths
Since the combination has already used 1, 2, and 3. Then the 4th digit must be either 4, 5, 6, 7, 8, or 9. So the probability must 1 out of 6 or 1/6.
Thursday, May 23, 2013 at 6:13pm by Ms. Sue

maths-urgently needed
A number of 4 different digits is formed by using 1, 2, 3, 4, 5, 6, 7. Find the probability that it is divisible by 5. Digits can be repeated
Monday, February 18, 2013 at 8:21am by Anonymous

maths
1. A die labelled A has one face marked 1, one face marked 2 and the other four faces marked 3. A die labelled B has four faces marked 2 and two faces marked 3. The dice A and B are thrown. Calculate the probability is 5. I got 18/36 2. There are 12 boys and 20 girls in a ...
Wednesday, June 3, 2009 at 6:40pm by Anonymous

PROBABILITY
The probability ofdrawing just one club in the 52 draws = 1/4 * (3/4)^51 The probability of drawing two clubs — which fits the "at least" description — in 52 draws = (1/4)^2 * (3/4)^50 The probability of drawing three clubs in 52 draws = (1/4)^3 * (3/4)^49 ...
Thursday, April 17, 2008 at 11:24pm by PsyDAG

Math-Probability
Hello, I'm trying to figure out this probability problem. Can anyone help walk me through? Thank you so much!! A box contains 10 green, 2 red, 7 yellow, and 6 blue marbles. Four marbles are drawn from the box without replacement. a) What is the probability that all four ...
Friday, August 7, 2009 at 2:42pm by Marie

business
suppose that al knows that the probability of an investigation is 0.70 how low must the probability of water's completing its research on time be so that the probability of litres being awarded the contract is at least 0.65?
Monday, December 24, 2012 at 7:40am by vinoth

MATH
IF THE PROBABILITY OF A IS 3/5.AND PROBABILITY OF A INTERSECTION B IS 3/10.WHAT IS THE PROBABILITY OF B?
Saturday, December 15, 2012 at 4:51pm by Anonymous

statistics
odd numbers = 1, 3, 5, 7, 9 even numbers = 2, 4, 6, 8 you are looking for the probability of getting 1, 2, or 3 balls with odd numbers. 5/9*4/8*3/7 = probability of selecting one odd number 5/9*4/8*4/7 = probability of selecting two odd numbers 5/9*4/8*3/7 = probability of ...
Monday, September 13, 2010 at 10:25pm by PsyDAG

maths
second die : 2,3,5 to get 7, must be 5,4,2 probability = likely outcomes / all outcomes i think it is 1/2 - dont trust me not a reliable source
Monday, December 31, 2012 at 12:27pm by Knights

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