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December 5, 2016

Search: Probability

Number of results: 9,752

Probability
The probability that it will take 5 or more flips of a fair coin before it lands on heads can be written as a/b , where a and b are coprime positive integers. Find a+b
March 12, 2013 by John

stat probability
A coin is tossed 4 times. Find the probability that the 4th toss is a tail, given that the first 3 tosses were all heads.
April 8, 2013 by Lynn

statistics
Consider a binomial experiment with 20 trials and a probability of 0.45 on a single trial.Use the normal distribution to find the probability of exactly 10 successes.
March 21, 2014 by john

algebra/check my answer
Three fair coins are tossed. What is the probability that at least one is a head? (Enter the probability as a fraction.) I came up with 7/8 Thank you
May 27, 2014 by Mary Ann

Math
Can someone please help me. At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a ...
December 8, 2010 by Rena

Math
If I have a random stack of 5 quarters, the 1st 3 quarters are heads. What is the probability the the 4th quarter would be another head What is the probability the the 4th quarter would be a tail Is there a way to show the probability or odds that you would continue to keep ...
September 23, 2015 by Jeff

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 ...
December 9, 2009 by mozza

probability
a teacher on her way to work passes through 3 stoplights each morning. the distances between the stop lights are great and the lights operate independently of each other. if the probability of the red lights are .4,.8 and .6 for each light, what is the probability to the ...
February 25, 2014 by Lindsey

statistics
The number of independent errors in a transmitted message of n symbols follows a Binomial distribution. The probability of an error in transmission is .001. If 2,000 symbols were sent, a) Find the expected number of errors. b) Write out the formula for the distribution of ...
September 4, 2011 by Layla

Algebra
Can anybody help me on this problem for my Algebra 2 class, I am having a hard time tyring to solve it step by step. The probability that an archer hits the target is p = 0.8, so the probability that he misses the target is q = 0.2. It is known that in this situation the ...
August 11, 2015 by Selena

Algebra
Can anybody help me on this problem for my Algebra 2 class, I am having a hard time tyring to solve it step by step. The probability that an archer hits the target is p = 0.8, so the probability that he misses the target is q = 0.2. It is known that in this situation the ...
August 12, 2015 by Selena

Math - Probability
You invent a new system to make excellent racing tires for the Indianapolis 500/ Your tires are good for an average of 105 miles, with a standard deviation of 7.5 miles. What is the probability that one of your tires can go for at least 44 laps? What is the probability that ...
July 9, 2012 by Laura

help... probability
The Smith family has 4 children that are all girls. What is the probability that the next one will be a girl? You plan on having four children and you want all boys. If you have children, what is the probability you will get four boys?
October 16, 2007 by maggie r

Statistics
(a) With n=12 and p =0.4 find the binomial probability that p(9) by using a binomial probability table. (b) np ¡Ý5, nq¡Ü5, also estimate the indicated probability by using the normal distribution as an approximation to the binomial, is np < 5 or nq < 5 than state the...
June 1, 2013 by Jenn

stastistics
With n=13 and p=0.7, find the binomial probability P(9)by using a binomial probability table. If np> and nq>5, also estimate the indicated probability by using the normal distribution as an approximation to the binomial,if np<5 of nq<5 then state that the normal ...
November 22, 2013 by angela

statistics
With n=13 and p= 0.7, find the binomial probability p(9) by using a binomial probability table. If np> and nq> 5, also estimate the indicated probability by using the normal distribution as an approximation to the binomial, if np<5 or nq<5 then state that the ...
November 25, 2013 by angela

Probability
Suppose that the probability is 1 in 3,900,000 that a single auto trip in the United States will result in the death of the driver. Over a lifetime, an average U.S. driver takes 50,000 trips. Assume that events are independent: (a) What is the probability of such a driver ...
October 25, 2010 by Laura

probability
Suppose that the probability is 1 in 3,900,000 that a single auto trip in the United States will result in the death of the driver. Over a lifetime, an average U.S. driver takes 50,000 trips. Assume that events are independent: (a) What is the probability of such a driver ...
October 26, 2010 by Laura

Probability
The probability that Kate goes to the cinema is 0.2.If Kate does not go Claire goes. If Kate goes to the cinema the probability that she is late home is 0.3. If Clair goes to the cinema the probability that she is late home is 0.6. Calculate the probability that..... The ...
February 22, 2014 by Anonymous

Probability
The probability that Kate goes to the cinema is 0.2.If Kate does not go Claire goes. If Kate goes to the cinema the probability that she is late home is 0.3. If Clair goes to the cinema the probability that she is late home is 0.6. Calculate the probability that..... The ...
February 22, 2014 by Anonymous

Probability
Two group of male students cost their past on a particular proposal.the result are as follows: Group infavour against A 128 32 B 96 48 <a> if a student in favour of proposal is selected for a post. What is the probability that he is from group A ? if a student is chosen ...
February 4, 2012 by Johnson

bio
The probability that their baby will be a carrier of the gene for PKU is (A) ___3/4_______. The probability that their baby will be affected by PKU is (B) __________. If both genotypes were Pp, the probability that their baby would be affected by PKU would be (C) ___1/4______...
May 30, 2014 by carrie

MATH (Probability)
Jackson and Alice are the boss and secretary respectively working in an office for a firm. At any particular time during office hours, the probability that Jackson is in the office is 0.82 and probability that Alice is in the office is 0.98. The probability that Jackson is in ...
August 31, 2011 by FAKAAPO

Statistics
Bart is taking two classes, backpacking and biology. His probability of passing backpacking is 0.54, that of failing biology is 0.83, and that of passing at least one of the two courses is 0.65. Find the probability of the following. A. Joe will pass both courses. B. Joe will ...
April 2, 2007 by Mary

probability help!!
buses arrive at a bus stop at 15minute interval,starting from 7am if a passenger arrived at a times that is his uniformly distributed (a):find the probability that the passenger wait less than 5minute for a bus? (b):find the probability that the passenger wait more than ...
May 7, 2016 by dam

Mathematics
Please help... In a 200 m swimming race between 8 boys, the probability of Omar winning the race if he is in one of the two outside lanes is 1/4. If he is in any of the other lanes, the probability of Omar winning is 1/3. If the lanes are drawn at random, what is the overall ...
May 29, 2007 by Elizabeth

statistics
S) Suppose we want to determine the (binomial) probability (p) of getting 5 heads in 15 flips of a 2-sided coin. Using the Binomial table in the appendix of the text, what values of n, x, and p would we use to look up this probability, and what would be the probability? n=...
February 17, 2015 by slomomo

Probability
Find the probability of obtaining between 50 and 55 tails inclusive when a fair coin is flipped 80 times. (answer accurate to four decimal places.)
November 22, 2009 by Anna

College Algebra
The letters in the word probability are written on separate slips of paper. Find the probability of drawing two i's in a row without replacement.
December 11, 2013 by Sarah

Choose the term to complete this sentence?
1 Describes how likely it is that an event will happen based on all the possible outcomes. Theoretical probability or Experimental probability
June 3, 2014 by nonononono

Math
Determine the probability of drawing two cards from a deck( without replacement) and getting the same suit using 1) conditional probability 2) combinations
July 14, 2015 by Helen

Math (Probability)
A spinner is divided into x equal sectors, numbered 1 through x . The probability of spinning a number less than four is 1/10. Determine the value of x
August 18, 2015 by Zena

probability
The probability of mary,esther and john coming to school late on monday are 1/4,2/5 and1/3 respectively.draw a tree diagram to represent the information .
April 21, 2016 by Starn

probability theory
3 students; A, B and C, are in a swimming race. A and B have the same probability of winning and each is twice as likely to win as C. Find the probability that B or C wins the swimming race. 3) Given three boxes as follows: Box A contains 3 red, 2 white and 2 blue balls. Box B...
November 20, 2015 by charles

I am having trouble with this homework question ,
Here is the probability model for the blood type of a randomly chosen person in the United States. Blood type O A B AB Probability 0.53 0.21 0.03 0.23 What is the probability that a randomly chosen American does not have type O blood? % Round to the nearest 0.01%
October 1, 2016 by Amanda

statistics
When someone buys a ticket for an airline flight there is a 0.0995 probability that the person will not show up for the flight (based on data from the IBM research paper by Lawrence, Hong, and Cherrier). An agent for Air America want to book 24 persons on an airplane that can ...
March 1, 2012 by meagan

probability
What is the probability that an 8 digit numbers contains "97"?
June 20, 2013 by steph

probability
Find the probability of P(E or F) if E and F are mutually exclusive P(E)=0.41 and P(F)=0.47
June 17, 2014 by carol

Probability
What is the probability of choosing an odd # from A that is AnB? A{1,2,3,4,7,9} B{3,7,9,11,12,15}
July 30, 2015 by Seany

Probability
What is the probability of choosing an odd # from A that is AnB? A{1,2,3,4,7,9} B{3,7,9,11,12,15}
August 6, 2015 by Seany

math (ms sue)
Suppose that one voter in the 2010 UK General Election was selected at random. The probability that the person voted for the Conservative Party was 0.36, the probability that the person voted for the Labour Party was 0.29, and the probability that the person voted for the ...
March 30, 2016 by Sam

Math - Probability
Annabelle wants to move to a new city. If her chance of getting a job in Montreal is 10%, and her chance of getting a job in Vancouver is 35%: 3a) What is the probability that Annabelle will be offered both jobs? 3b) What is the probability that she will only get one of the jobs?
May 19, 2013 by Jess

Counting and Probability
One member of the debate team is going to be chosen President. Each member is equally likely to be chosen. The probability that a boy is chosen is 2/3 the probability that a girl is chosen. Girls make up what fraction of the debate team?
November 16, 2015 by Mr. Alexander

math
The company will use machine A,B,C,D with probabilities 0.23,0.45,0.19 and 0.13 respectively.From past experience it is known that the probability of defective tablet produced by the machine are 0.11,0.2,0.07 and 0.05 respectively.Suppose a defective tablet is produced:...
May 15, 2016 by koro

probability
The probability that Alysha will miss school today is 0.15. The probability that Carla will miss school today is 0.07. The probability that both of these students will NOT miss school today is what?
November 14, 2009 by Anna

statitics
you are going to play two games the probability you win the first game is 0.60 if you win the first game the probability you will win the second game is 0.75 if you lose the first game the probability you win the second game is 0.55. what is the probability you win exactly one...
July 29, 2016 by bernie

statistic
You draw one card from a shuffled standard deck or cards (cards are in four suits-red diamonds, red heart, black clubs and black spades-and are numbered 2,3,4,5,6,7,8,9,10, J,O,K,A). A.What is the probability of drawing a red card B.What is the probability of drawing a queen c...
March 14, 2014 by Helen

statistic
You draw one card from a shuffled standard deck or cards (cards are in four suits-red diamonds, red heart, black clubs and black spades-and are numbered 2,3,4,5,6,7,8,9,10, J,O,K,A). A.What is the probability of drawing a red card B.What is the probability of drawing a queen c...
March 16, 2014 by HELEN

probability
Before leaving for work, Victor checks the weather report in order to decide whether to carry an umbrella. The forecast is “rain" with probability 20% and “no rain" with probability 80%. If the forecast is “rain", the probability of actually having rain on that day is 80...
February 12, 2014 by abc

Telecommunications
We send a frame of 256 bits. If the probability that a bit changes in transmission is 0.001 and each bit is independent. a. What is the probability that exactly 6 bits change? b. What is the probability that exactly 0 bits change ?
October 18, 2013 by liam

math
An ancient Korean drinking game involves a 14-sided die. The players roll the die in turn and must submit to whatever humiliation is written on the up-face: something like "Keep still when tickled on face." Six of the 14 faces are squares. Let's call them A, B, C, D, E, and F ...
May 15, 2016 by AnonYmous

stat
In a certain high school, the probability that a student drops out is 0.08, and the probability that a dropout gets a high-school equivalency diploma (GED) is 0.33. What is the probability that a randomly selected student gets a GED?
February 17, 2012 by shan

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 ...
January 28, 2008 by Anonymous

Economics
The company estimates the probability of no damage to be 0.60, the probability of damage between $0 and $10,000 to be 0.25, and the probability of damage between $10,000 and $25,000 to be 0.12. If the company wants to make a profit of $200 above the expected cost, what should...
July 1, 2012 by Sonya

stats again
ok I get it, so once I get the prob figred for one person, how do I figure it if additional attempts are made and the question is about the prob of at least one of the additional attempts say n = 6 getting the same results as the first Once you have the probability of passing ...
July 5, 2007 by holly

Maths
The probability of passing geography in the examination is 7/10 and the probability of passing agriculture after one has passed geography is 5/7. The probability of passing agriculture after one failed geography is 1/6. Calculate the probability of a student passing agriculture.
February 12, 2016 by Christopher

statistics
Use of normal distribution to approximate the desired probability. Find the probability of getting at least 30 fives in 200 tosses of a fair 6 sided die.
October 8, 2010 by Lori

Probability and statistics
4. The probability that a prime number occurs on at least 2 tosses when a balanced dice is tossed 5 times independently is equal to. Choose one answer a. 26/32 b. 30/32 c. 6/32 d. 16/32
March 2, 2012 by Arun

maths(Probability)
Two fairly six~sided dice are rolled,find the probability that their total score is (a)2 (b)7 (c)a prime number (d)a perfect square. Solutions. (a)2/6=1/3 (b)7/6
February 11, 2015 by eliphasjnr

math
At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product failed check B, what is...
January 9, 2010 by crystal

Math
At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product failed check B, what ...
December 8, 2010 by Rena

Math
At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product failed check B, what ...
December 8, 2010 by Rena

Statistics (41)
A market research firm conducts telephone surveys with a 42% historical response rate. What is the probability that in a new sample of 400 telephone numbers, at least 150 individuals will cooperate and respond to the questions? In other words, what is the probability that the ...
May 6, 2014 by Mia

Economics (40)
A market research firm conducts telephone surveys with a 42% historical response rate. What is the probability that in a new sample of 400 telephone numbers, at least 150 individuals will cooperate and respond to the questions? In other words, what is the probability that the ...
May 9, 2014 by Mia

math probability
Assume that every time you buy an item of the Hong Kong Disney series, you receive one of the four types of cards, each with a cartoon character Mickey, Minnie, Donald and Daisy with an equal probability. Over a period of time, you buy 6 items of the series. What is the ...
September 27, 2016 by matthew

math (stats)
According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. [Round your answers to three decimal places, for example: 0.123] Compute the probability that a ...
October 2, 2016 by b

Alg2/trig
Hi, I hope you guys don't mind if I post a couple probability questions. A child returns a five-volume set of books to a bookshelf. The child is not able to read, and so cannot distinguish one volume from another. What is the probability that the books are shelved in the ...
March 24, 2009 by Chris

Probability & Stats
The probability that Pete will catch fish on a particular day when he goes fishing is 0.8. Pete is going fishing 3 days next week. 1. The probability that Pete will catch fish on exactly one day is: a. .008 b. .096 c. .104 d. .8 Please show work
November 2, 2016 by Sally

Stats
The probability that a person has blue eyes is 16%. Three unrelated people are selected at random. a. Find the probability that all three have blue eyes: b. Find the probability that none of the three have blue eyes c. Find the probability that one of the three has blue eyes
April 30, 2013 by Dave

math
Marley drives to work every day and passes two independently operated traffic lights. The probability that both lights are red is 0.35. The probability that the first light is red is 0.48. What is the probability that the second light is red, given that the first light is red?
May 9, 2014 by nyshaw

Statistics
10 A color candy was chosen randomly out of a bag. Below are the results: Color Probability Blue 0.30 Red 0.10 Green 0.15 Yellow 0.20 Orange ??? a. What is the probability of choosing a yellow candy? b. What is the probability that the candy is blue, red, or green? c. What is ...
November 29, 2014 by Den

statistics
I am having trouble figuring out how to do this type of problem. Here is the current problem I am working on: the probability that a tomato seed will germinate is 60%. A gardener plants in batches of 12. A.) what is the probaility that exactly 10 seeds will germinate? B.) what...
January 2, 2010 by Pam

probability
Make a histogram showing the binomial probability distribution for the following: A waiter at the Green Spot resturant has learned from long experience that the probability that a lone diner will leave a tip is only 0.7. During one lunch hour he serves six people who are ...
March 4, 2016 by unclesam

Discrete Math
12 A computer science department has a probability of 0.35 that a senior receives a job offer in IT before graduation. Random select 8 senior students • What is the probability that 5 students received offers before graduation? • What is the probability only 1 student ...
April 30, 2015 by Peace

algebra
you are going to the Maryland state fair and would like to play some carnival games with the hopes of winning a prize .your mom said you are allowed to play one game only .your task is to analyze two carnival games and predict the probability of winning each game. you will ...
June 9, 2016 by ester

Quantitative Analysis for Business
The ages of a group of 50 women are approximately normally distributed with a mean of 48 years and a standard deviation of 5 years. One women is randomly selected from the group, and her age is observed. A) Find the probability that her age will fall between 56 and 60 years. B...
May 14, 2013 by Silvia

Probability - CHECK ANSWERS
I have an eight pack of crayons. Colors red, green, blue, orange, black, gray, pink, and purple. What is the probability of choosing the green crayon? 12.5 percent What is the probability of choosing the red, blue, or gray crayon? 37.5 percent What is the probability of not ...
October 15, 2010 by Jessica

Probability
Start with a standard, uniformly shuffled 52-card deck, and draw the cards one at a time. What is the probability of drawing a King strictly before getting a Spade?
July 10, 2011 by Anonymous

Stats
Use the normal distribution to approximate the following Binomial probability. A product is manufactured in batches of 100 and a defect rate of 8%. Find the probability of more then 7 defects.
June 11, 2015 by cindy

statistics
34. Two students (say A, and B) are challenged to solve a problem in statistics. Suppose that the probability that A will solve the problem is 40%, the probability that B will solve the problem is 55%, and the probability that A or B will solve the problem is 25%. The ...
June 30, 2015 by meri

statistics
The Denver Post stated that 80% of all new products introduced in grocery stores fail (are taken off the market) within 2 years. If a grocery chain introduces 66 new products, what is the probability that within 2 years , 7 or more fail? What is the probability that within 2 ...
March 23, 2012 by lola

Math
Suppose there is a bag containing 25 envelopes and 10 of the envelopes contain prizes. You reach in, without looking, and select 2 envelopes, without replacement. a) What is the probability that both of your picks are winner? b) What is the probability that none of your picks ...
March 22, 2013 by Anonymous

Algebra
Brandon flips two fair coins multiple times and records the frequency of the results in the following table. 50 trials|125trials|150trials HH 10 33 37 TH 9 31 38 HT 13 28 38 TT 18 33 37 DETERMINE THE EXPERIMENTAL PROBABILITY AND THEORETICAL PROBABILITY FOR EACH OUTCOME IN EACH...
May 22, 2016 by Blake

Statistics
Service times for customers at a post office follow some right-skewed distribution with mean 2.91 minutes and standard deviation 1.74 minutes. (a) Can you calculate the probability that the average service time for the next two customers is less than 2.64 minutes? If you can...
November 4, 2014 by Mel

Math
There is a 60% that your math teacher will give a pop quiz tonight and, due to the fact that you have a soccer game, there is an 85% chance you will not be able to do your math homework. You decide that you will do the homework if the probability of there being a pop quiz and ...
October 8, 2015 by Hannah

Probability
Before leaving for work, Victor checks the weather report in order to decide whether to carry an umbrella. On any given day, with probability 0.2 the forecast is “rain" and with probability 0.8 the forecast is “no rain". If the forecast is “rain", the probability of ...
February 13, 2015 by qwerty

math
you are dealt 13-card bridge hand from a 52-card bridge deck. what is the probability that you will be dealt exactly 5 hearts? what is the probability that you will dealt at list 2 hearts? what is the probability that you will receive 5 hearts, 4 clubs, 2 diamonds, and 1 spade?
December 3, 2016 by josh

math
you are dealt 13-card bridge hand from a 52-card bridge deck. what is the probability that you will be dealt exactly 5 hearts? what is the probability that you will dealt at list 2 hearts? what is the probability that you will receive 5 hearts, 4 clubs, 2 diamonds, and 1 spade?
December 4, 2016 by Alex

math (please)
There is a 60% that your math teacher will give a pop quiz tonight and, due to the fact that you have a soccer game, there is an 85% chance you will not be able to do your math homework. You decide that you will do the homework if the probability of there being a pop quiz and ...
October 8, 2015 by Hannah

math
What is the probability of getting an even number when rolling a six-sided number cube? 0.5 5% 2/6 30% You place the letters for the word smart in a bag. What is the probability of choosing a letter that is NOT a vowel? (remember vowels A, E, I, O, and U.) 0.2 1/5 80% 0.75 You...
April 27, 2016 by FluttershyK22

Math
Carol makes a spinner for a game. The spinner is divided into 10 equal sections. Each section is shaded 1 of these colors: green, red, yellow, or blue. On this spinner, the probability of spinning green is 3 times as great as the probability of spinning red. The probability of...
March 20, 2016 by Mason

Statistics
Suppose you conduct a study and find that the probability of having a baby boy is 60%. Now suppose three of your relatives are going to have babies. a) Build a tree diagram showing all the conditional probabilities and joint probabilities associated with the sex of the three ...
May 10, 2008 by Danny

Statistics
Suppose you conduct a study and find that the probability of having a baby boy is 60%. Now suppose three of your relatives are going to have babies. a) Build a tree diagram showing all the conditional probabilities and joint probabilities associated with the sex of the three ...
May 11, 2008 by Danny

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) PLEASE HELP!
February 4, 2008 by Anonymous

probabilities
A radioactive source of material emits a radioactive particle with probability 1/100 in each second. Let X be the number of particles emitted in one minute. 1. Determine the probability distribution, the expected value and the variance of X. 2. Calculate the probability that ...
April 26, 2016 by hassan

statistics
Find the indicated binomial probabilities. Round to the nearest 3 decimal places. In a local college, 20% of the math majors are women. Ten math majors are chosen at random. 1) What is the probability that exactly 2 are women? 2) What is the probability that 2 or less women ...
March 23, 2010 by please help me!

Math Please Help
What is the probability of getting an even number when rolling a six-sided number cube? 0.5** 5% 2/6 30% You place the letters for the word smart in a bag. What is the probability of choosing a letter that is NOT a vowel? (remember vowels A, E, I, O, and U.) 0.2 1/5** 80% 0.75...
May 10, 2016 by #Blessed

math
of a set of 10 cards, 3 have red circles, 4 have yellow triangles, and 3 have green diamonds. you choose one card at random and then replace it. then you choose a second card. what is the probability that both cards have yellow triangles? Find the probability of obtaining the ...
April 16, 2007 by dillon

Math- probability
In a city, every day is either cloudy or sunny (not both). If it's sunny on any given day, then the probability that the next day will be sunny is 3/4. If it's cloudy on any given day, then the probability that the next day will be cloudy is 2/3. a) In the long run, what ...
May 15, 2015 by Anonymous

statistics
Consider a binomial experiment with 20 trials and probability 0.45 on a single trial. Use the normal distribution to find the probability of exactly 10 successes. Round your answer to the thousandths place.
May 17, 2011 by coya

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