Friday

February 27, 2015

February 27, 2015

Number of results: 101

**Probabilty**

The public transport system is aware that one person in twenty does not buy a ticket for their trip. The manager decides to challenge 200 travelling people as to charger they have a valid ticket or not. (a) calculate the probabilty that everyone had a ticket, (b) calculate the...
*April 29, 2010 by Anonymous*

**Probability**

The public transport system is aware that one person in twenty does not buy a ticket for their trip. The manager decides to challenge 200 travelling people as to charger they have a valid ticket or not. (a) calculate the probabilty that everyone had a ticket, (b) calculate the...
*April 30, 2010 by Anonymous*

**statistics**

The average scuba diver can stay under water for 42 minutes with a standard deviation of 8 minutes.(show graph) B. what is the probabilty that a diver stays under for the less than 53 minutes? c.what is the probabilty that a diver stays under between 25 and 50? d. what is the ...
*November 26, 2012 by Ashley*

**statistics**

The average scuba diver can stay under water for 42 minutes with a standard deviation of 8 minutes.(show graph) B. what is the probabilty that a diver stays under for the less than 53 minutes? c.what is the probabilty that a diver stays under between 25 and 50? d. what is the ...
*November 26, 2012 by Ashley*

**statistics**

The average scuba diver can stay under water for 42 minutes with a standard deviation of 8 minutes.(show graph) B. what is the probabilty that a diver stays under for the less than 53 minutes? c.what is the probabilty that a diver stays under between 25 and 50? d. what is the ...
*November 26, 2012 by Ashley*

**Math**

A vase had 4 yellow flowers, 4 red flowers and 8 blue flowers. Donna takes one out, smells it and returns it to the vase. What is the probabilty she picked a red flower? What is the probabilty she picked a blue flower? Is it red 4:16 and blue 8:16?
*April 15, 2010 by Dylan*

**probabilty**

In a school, 14% of students take drama and computer classes, and 67% take drama Class. What is the probabilty that a students takes computer class given that the student takes drama class? i have no idea how to work this so please show me your work. Thanks!!
*March 19, 2009 by melissa*

**math probabilty**

how to come up witha simulation
*February 16, 2008 by chanel*

**probabilty**

Suppose P(A)= .3, P(B)=.4, and the P(A + B) = .12. What is: a.) P(A/B)? b.) P(B/A)? c.) are A and B independent? Explain your answer.
*October 7, 2009 by Sharon*

**probabilty**

Given that P(A) =2/9, what are the odds in favor of A occurring?
*May 30, 2010 by BBABY*

**PROBABILTY**

WHAT IS AN EXAMPLE OF DISCRETE DISTRIBUTION AND CONTINUOUS DISTRIBUTIONS?
*August 12, 2009 by Twg*

**9th grade Math**

what is the probabilty of spinning a divisor of 12?
*August 18, 2010 by Brett*

**math**

if you roll a die and toss a coin what is the probabilty? p(heads and 4)
*September 4, 2008 by kelly*

**math**

suppose that an experiment has four possible outcomes. a,b,c and d. if p(a)= p(b)= p(c) and p(d)= 2p(a) what is the probabilty of each event
*March 19, 2010 by walls*

**Statistics**

7 cards drawn from a deck without replacement what is probabilty one is a spade
*February 17, 2010 by C.O.*

**math**

You flip a coin and toss a 1-6 number cube what is the probabilty of getting a 5 and tails
*February 13, 2011 by sue*

**probability**

explain the probabilty of one event in a fair game with three possible outcome
*May 3, 2011 by nathan*

**maths-probabilty**

find the no. of ways in which letters of the word ARRANGEMENT can be arranged so that 2A's and 2R's do not occur together?
*March 11, 2013 by anoynomous*

**maths-probabilty**

find the no. of ways in which letters of the word ARRANGEMENT can be arranged so that 2A's and 2R's do not occur together?
*March 11, 2013 by anoynomous*

**probabilty**

a box contain contains 50 colours, 24 are red, 17 are blue and 9 are whites. draw a tree to represent the situation.
*June 27, 2014 by pretty*

**statistics**

if 1 adult male is randomly selected and is assumed to have 20 lb of carry on baggage, find the probabilty that his total is greater than 195 lb
*November 9, 2011 by Kristie*

**math**

a pair of dice is rolled. what is the probabilty of each of the following? a. the sum of the numbers shown uppermost is less than 5. b. at least one six is cast.
*April 15, 2014 by Dee*

**Statistics**

1. In a certain game, the probability of getting a red outcome is 0.03. Find the probability of getting an outcome that is not red? The answer must be in a decimal. I put 0.97 as the answer ( 1-0.03=0.97) 2. The instructor in a Humanities class says that students have a 15% ...
*September 29, 2013 by Lisa *

**math**

a number cube numbered 1 through 6 is rolled.what is the probabilty of rolling a prime number.
*May 11, 2011 by cameron*

**statistics**

Among the contestants in a competition are 44 women and 26 men. if 2 winners are randomly selected, what is the probabilty that they are all men?
*July 14, 2010 by Mike*

**math**

5 blue and 3 green what are probabilty of getting blue
*April 19, 2011 by debbie*

**Science**

What is the probabilty of two tall peas plants, heterzygous for the tall ellele, producing a short pea plant.? A. 75% B. 50% C. 25% D. 0% Is the answer c?
*October 10, 2014 by Anonymous*

**algebra**

One type of probabilty used practically everyday is: a) experiental probability b) scientific probability c) frequency of occurence d) None of the above
*October 8, 2009 by Philine*

**Physics**

If i have ten grains of sand on a flat, 8x8 chessboard, randomly distributed, what is the probabilty that all ten are on the same square?
*October 8, 2010 by Jessica*

**maths-probabilty**

A man has brought tomota and five fruits from market. How many ways he can prepare mixed jam by selecting any 3 fruits excluding tomato
*March 11, 2013 by anoynomous*

**maths-probabilty**

A man has brought tomota and five fruits from market. How many ways he can prepare mixed jam by selecting any 3 fruits excluding tomato
*March 12, 2013 by anoynomous*

**Stats**

The probabilty Distribution of a random variable X is given by the function f(x)= 1/84 (5/x) (4/3-x) for x= 0,1,2,3 Calculate the numerical probabilities and list the distribution. I got 10/21 for the x value of 2. The others I am unsure about! Help please
*February 9, 2010 by Karmen*

**math**

The faces of a cube are numbered 1-6. If the cube is tossed once, what is the probabilty that a prime number or a number divisible by 2 is obtained.
*September 28, 2011 by Anonymous*

**maths-probabilty**

A box contains 5 red balls and 6 black balls. in how many ways can 6 balls be selected so that there are at least two balls of each color?
*March 12, 2013 by anoynomous*

**math probabilty**

Find the (theoretical) probability of the given event, assuming that the coins are distinguishable and fair, and that what is observed are the faces uppermost. Six coins are tossed; the result is at most one head.
*December 5, 2010 by Liz*

**math (probability)**

there are 6 red marbles in a bag. the probabilty of picking a blue marble is 2/7. How many marbles are in the bag?
*October 29, 2012 by Anonymous*

**Find the probabilty**

Find the probability of S^2 3.3 1 6.3 49
*December 13, 2014 by Jenny*

**mamagement operation**

The city of Beljing is studying it Toursits Information Center. The Information collected about tourists arriving at the center is: interval time ( time between Arrivals)in minutes:(3,4,5,6,7)Probabilty percentage(20.2,23.6,31.2,18.4,6.6) The tourist receive service at one ...
*September 12, 2011 by cindy*

**math**

two students are playing with a six-sided number cube. the probabilty of tossing a number greater than 13 and less than 24 is 6/6 or 1. what are the possible numbers on the cube?
*September 13, 2010 by Darlene*

**maths-probabilty(urgently needed)**

A box contains 5 red balls and 6 black balls. in how many ways can 6 balls be selected so that there are at least two balls of each color?
*March 12, 2013 by anoynomous*

**math**

the probability that a radomly chosen potential customer will make a purchse is 0.20if a sales man calls on 6 customers .what is the probabilty they will make exactly 4 sales
*May 8, 2013 by collins*

**statistics**

the mean scale score on the mathematics examination of ninth grade students in new york state was 86 with a standard deviation of 5 points. Given a student was selected at random what is the probabilty that his score was 91 or higher?
*February 9, 2013 by kelly*

**Statistics**

One event A is _________________ of another event B if the probabilty of event A has occurred given event B is the same as the probability that A will occur with no knowledge of B. disjoint mutually exclusive dependent independent
*November 15, 2012 by John*

**Math**

Your softball team is raffling a stereo system and the total off 800 tickets have been sold. Your family bought 20 tickets. What is the probabilty that your family will not win?
*February 6, 2012 by Nicole*

**maths-probabilty**

A chairman is biased so that he selects his relatives for a job 3 times as likely as others. If there are 3 posts for a job. Find the probability distribution for selection of persons other than their relatives.
*March 17, 2013 by anoynomous*

**maths-probabilty(urgenlty)**

A chairman is biased so that he selects his relatives for a job 3 times as likely as others. If there are 3 posts for a job. Find the probability distribution for selection of persons other than their relatives.
*March 16, 2013 by anoynomous*

**math**

your cat is expecting a litter of kitten.suppose the probability of a male kitten is 1/2.what is the probabilty that a litter of five kittens contain all made kittens
*November 6, 2009 by Katherine*

**math**

your cat is expecting a litter of kitten.suppose the probability of a male kitten is 1/2.what is the probabilty that a litter of five kittens contain all made kittens
*November 6, 2009 by Katherine*

**math**

consider the stracture with 7 components such that each of them with probabilty p works independently A) find the minimal cut and minimal path sets? B)Find the reliablity for the stracture function?
*May 10, 2007 by skl*

**probability math question**

a bag contanins 7 red marbles, 2 blue marbles, and 1 green marble. What is the probabilty of choosing a marble that is not blue?
*March 23, 2014 by Anonymous*

**math**

there is a 20% chance that it will snow on tuesday and a 50% chance that it will snow on Wednesday. what is the probabilty that it will snow on either day?
*April 28, 2013 by j*

**Probabilty**

Biased coin has a 0.4 probability of landing on tails. The random variable x, based on a single toss of the coin, is defined as follows: x=0 if heads appears; x=1 if tails appears. What Is the mean value of X? Is it . 0.3 .4 .6 .5 .7
*November 28, 2012 by Gilbert*

**Math**

my problem is: From the box containing 5 red balls, 7 blue balls, 10 black balls. you select 4 balls what is the probabilty that EXACTLY 2 balls are black. so i know how to start it c(10,2)c(2,1) ---------- c(22,40 but how do you solve that ?
*December 13, 2010 by Katia*

**math 7th grade**

We are doing probabilty and if there is a sock draw with 24 socks in there and you want to know the P. of picking 2 white socks. If there are 10 white socks in the draw, how would this work?
*April 13, 2010 by anonymous*

**math**

Marcus and Allen are playing Rock/Paper/Scissors. The first one to win 10 times does not have to do the dishes. The score is now 9 to 7 in favor of Marcus. If ties are ignored and not counted, what is the probabilty Marcus will not have to do the dishes?
*November 19, 2009 by Matt*

**probability**

A cooking recipe lists 6 ingredients which must be mixed in the correct order. Unfortunately the bottom of the page on which the correct order was given has been burnt off. Suppose that you make a guess at the correct order. What is the probabilty that you will be right? ...
*March 10, 2010 by Anonymous*

**math**

your cat is expecting a litter of kitten.suppose the probability of a male kitten is 1/2.what is the probabilty that a litter of five kittens contain all male kittens
*November 6, 2009 by Katherine*

**PROBABILTY-STATS HELP**

A product is assembled from 3 components X,Y,Z and the probability of these components being defective is 0.01, 0.02,0.05. i have to find the probability that the assumed product will not be defective? can someone explain to me, how do it? thanks
*April 5, 2012 by Taskeen*

**Math**

an ice cream parlor is giving away free icecream sundaes on opening day. the sundaes are assembled randomly from 7 types of ice cream, 2 types of sauce, and 5 kinds of toppings. find the probabilty.
*March 7, 2014 by adam*

**statistics**

mean=20, standard deviation =6.Use the emperical rule to estimate the probabilty that a randomly chosen patient had to wait more than 26 min. Of 2000 patients, estimate the # of patient having to wait more than 26 mins
*November 12, 2012 by Anonymous*

**Math**

my problem is: From the box containing 5 red balls, 7 blue balls, 10 black balls. you select 4 balls what is the probabilty that EXACTLY 2 balls are black. i know that you start it/set it up like this: c(10,2)c(2,1) divided by c(22,4) and i can get the answer by plugging it in...
*December 13, 2010 by Katia*

**math**

A bag contains 11 red balls, 9 blue balls and x yellow balls. The probabilty of choosing a yellow ball at random is 1/6. What is the probability of not getting a blue ball.
*November 19, 2013 by danial*

**Algebra 1**

Marcus and Allen are playing Rock/Paper/Scissors. The first one to one 10 times does not have to do the dishes. The score is now 9 to 7 in favor of Marcus. If ties are ignored and not counted, what is the probabilty Marcus will not have to do the dishes? Express your answer as...
*November 16, 2009 by Zach*

**6th grade math**

Gene has less than 12 nickels,dimes,and quarters in his pocket.The probability of pulling out a nickel or a quarter is 3/4.The probabilty of pulling out a dime is 1/4.How many coins does Gene have in his pocket?How many of each does he have?
*April 14, 2011 by mike T*

**sixth grade math**

Gene has less than 12 nickels,dimes,and quarters in his pocket.The probability of pulling out a nickel or a quarter is 3/4.The probabilty of pulling out a dime is 1/4.How many coins does Gene have in his pocket?How many of each does he have?Please explain
*April 15, 2011 by mike T*

**math**

Gene has less 12 nickels,dimes,&quarters in his pocket.The probabilty of pulling out a nickel or quarter is 3/4.pulling out a dime is 1/4.How many coins does gene have in his pocket?.how many of each coin does he have?Please explain how you got the answerit will help me alot ...
*April 14, 2011 by mike *

**math**

suppose a license plate contains 4 digits.the probability of plate number having an even or an odd digit is the same.what is the probabilty of having a license plate with all even digits.
*November 6, 2009 by Katherine*

**Pre-calculus**

A set of data is normally distributed with a mean of 500 and standard deviation of 40. a). What percent of the data is between 460 and 540? P(460<x<540)=P(-1<z<1) =0.8413-0.1587 =0.6826 b). Find the probabilty that a value selected at random is less than 420. P(x&...
*January 16, 2009 by Mary*

**math**

Suppose a license plate contains four digits.The probability of a license plate having an even or odd digit is the same.What is the probabilty of having a license plate with all even digits.
*November 7, 2009 by melrose*

**elementary statistics**

56% of families had no children under the age of 18;17% had no child;18% had two children;6% had three children; and 3% had four or more children. If a family is selected at random, find the probabilty that the family has less than three children(express your answer in percent...
*March 3, 2012 by goldielocks*

**statistics**

refer to a bag of marbles containing 5 green marbles, 4 red marbles and 2 yellow marbles. Three marbles are drawn from the bag, without replacement. What is the probabilty that all three marbles drawn are green?
*March 14, 2010 by keisha*

**Probabilty**

There is a large jar of marbles, containing red, blue, yellow, black and white marbles. How many marbles must you draw(without looking) from the jar to be sure of getting at least three of one color? I have a similar question with socks: 10 white, 6 black, how many drawn for ...
*June 24, 2010 by Melisa*

**Math**

While getting dressed for school early one morning, the light in Toni's bedroom burned out. Toni knew he had plenty of clean socks in his drawer, but none of them were matched. He had 24 white socks and 6 blue socks. What is the probabilty of Toni finding 2 white socks or 2 ...
*September 1, 2014 by Katelyn*

**Math**

While getting dressed for school early one morning, the light in Toni's bedroom burned out. Toni knew he had plenty of clean socks in his drawer, but none of them were matched. He had 24 white socks and 6 blue socks. What is the probabilty of Toni finding 2 white socks or 2 ...
*September 1, 2014 by Katelynn J*

**maths-probabilty**

Bag 1 contains 2 white and 3 red balls and bag 2 contains 4 white and 5 red balls. 1 ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn from bag 2
*March 20, 2013 by anoynomous*

**statistics**

At a certain college, 15% of the students receieved an A in their required math cousre, 10% receieved an A in their required chemistry course, and 5% receieved an A in both. A student is selected at random. a.) What is the probability that he received an A in either chemistry ...
*October 4, 2009 by Sharon*

**maths- probabilty(me posted third time)plse answer**

There are two bags out of which Bag 1 contains 2 white and 3 red balls and bag 2 contains 4 white and 5 red balls. 1 ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn from bag 2
*March 19, 2013 by anoynomous*

**decision science**

The university computer lab has 10 computers which are constantly being used by students. Users need help from the one lab assistant fairly often. Students ask for help at a Poisson rate of an average of 4 requests per hour for any one computer. the assistant answers questions...
*May 2, 2012 by sharon*

**maths-probabilty(URGENTLYYY)**

There are two bags out of which Bag 1 contains 2 white and 3 red balls and bag 2 contains 4 white and 5 red balls. 1 ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn from bag 2
*March 19, 2013 by anoynomous*

**maths-probabilty**

There are two bags out of which Bag 1 contains 2 white and 3 red balls and bag 2 contains 4 white and 5 red balls. 1 ball is drawn at random from one of the bags and is found to be red. Find the probability that it was drawn from bag 2
*March 19, 2013 by anoynomous*

**Probabilty & Statistic**

A random sample is selected from a normal population with a mean of __40 and a standard deviation of __10. After a treatment is administered to the individuals in the sample, the sample mean is found to be M _ 42. a. How large a sample is necessary for this sample mean to be ...
*January 23, 2012 by Sharon*

**statistics**

Many companies today have a mandatory drug testing policy for their employees. To minimize the cost of testing, sample from 6 people are combined. If the mixture tests negative then all 6 individual employees are also negative. Find the probabilty of a positive result for 6 ...
*March 9, 2011 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 ...
*April 22, 2010 by nabiha*

**math probabilty- please help**

You spin the spinner twice. draw a tree diagram and list sample spaces to show the possible outcomes. From that answer questions 1,2 and 3. The spinner is 4 equal parts for a, b, c ,d I know the tree diagram- you Have a,b,c,d, and from each of those letters ex. A has four ...
*May 11, 2013 by B6*

**probabilty**

Smitty's Bar and Grill has brand name recognition of 61% around the world. Assuming we randomly select 2 people. The assumptions of a Bernoulli process are met. What is the probability a)exacatly 5 of the 12 recognize the name of Smitty's Bar and Grill? b)5 or fewer recognize ...
*September 23, 2011 by dee*

**Probabilty/Statistics**

1)A coin is tossed 5 times. Find P(at most 4 tails.) A)3/16 B)13/16 C)1/32 D)31/32 I chose D 2)How many different arrangements of the letters of the word doodle are possible? A)180 B)720 C)15 D)90 I chose B For #3-5, use the following tepereatures from Jan-Dec: 50,48,51,65,77,...
*February 8, 2008 by Jon*

**Math probabilty**

An amusement park, Dino World, considering adding some new attractions, conducted a study over several typical days and found that, of 10,000 families entering the park, 1020 brought just one child (defined as younger than age 12), 3370 brought two children, 3510 brought three...
*July 10, 2011 by sky*

**Statistics**

Please help. Find the probability of getting 2 hearts if the cards are drawn from a regular deck and the first card is not replaced. A true/false quiz consists of twenty questions. If a student answers the twenty questions by making random guesses, what is the probability of ...
*December 11, 2006 by Mary*

**Statistics**

A game at the state fair has a "guesser" guess the month of your birth. You win a prize if he misses your month by more than 2 months (for ex: if you were born in April, and he guesses February, he wins; if he guessed January, you win). For simplicity, assume that all 12 ...
*July 3, 2012 by BadatStat*

**probabilty**

When I go to the local music store the probability I can buy any particular CD I want is 2/5, but if I go to the department store in nearby Tadchester the probability is 5/6. I want to buy two particular CDs. What is the probability that (a)I can get them both locally (b)I ...
*May 11, 2009 by Anonymous*

**probabilty**

Suppose that when a job candidate comes to interview for a job at, say McDonald's, the probability that the candidate will want the job (A) after the interview is .68. Also, the probability that McDonald's wants the candidate (B) is .36. The probability P(A/B) is .88. a.) Find...
*October 7, 2009 by Sharon*

**statistics**

a study found 37% of a new technique resulted in pregnancy and in that technique 25% resulted in multiple births what is the probabilty that the new technique produced a pregnacy and multiple births what is probability that a random selected pregnancy did not produce multiple ...
*June 6, 2013 by jane*

**statistics**

You forget to set your alarm with a probaility of .3. If you set the alarm it rings with the probabilty of .8. If the alarm rings, it will wake you on time to make your first class with the probability of .9. If the alarm does not ring, you wake in time for your first class ...
*October 2, 2009 by Sharon*

**Algebra**

1)An ice cream store has 31 flavors of ice cream and 10 toppings. A regular sundae has 1 flavor of ice cream, 1 topping, and comes with or without whipped cream. How many different ice cream sundaes can be ordered? A)310 B)372 C)620 D)82 I chose C 2)How many 5 digit codes are ...
*February 7, 2008 by Jon*

**Statistics**

I don't mind you showing me the caluclator key strokes to do this or show me the mathematical way whice ever thanks Here is a simple probability model for multiple-choice tests. Suppose that a student has probability p of correclty ansering a question chosen at random form a ...
*January 26, 2010 by Kate*

**STAT-discrete random varaibles**

a driver passes 4 sets of traffic lights. the random varaible X is the number of traffic lights he has to stop at. the probabilty distribution for x is given: x 0 1 2 3 4 prob 0.1 0.2 0.3 0.2 0.2 a) find the upper quartile of the number of traffic lights at which the driver ...
*April 22, 2007 by mick*

**Probability**

Could someone please check this and let me know if I'm doing it correctly? Sammy and Sally each carry a bag containing banana, chocolate bar, and a licorice stick. Simutaneously, they take out a single good item and consume it. The possible food items that Sally and Sammy ...
*October 28, 2006 by Mary*

**Statistics**

A Swedish study used 1360 patients who had suffered a stroke. The study randomly assigned 684 patients to receive a placebo treatment and the rest to receive an aspirin treatment. Out of those who received the placebo treatment, 28 died due to heart attack in 3 years, whereas ...
*November 28, 2010 by Katerina*

**Statistics (Reiny)**

1. A consumer organization estimates that 30% of the households in a particular community have one television set, 39% have two sets, and 20% have three or more sets. What is the probability that a household chosen at random does not have two sets? A) 0.39 B) 0.80 C) 0.61 D) 0...
*September 30, 2013 by Lisa *

**Probability II =) **

You are shown five cards, Three have X written on them and two have Y. The cards are turned over so the X abd Y are no longer visible, and shuffled/ One card is picked and laid face up on the table. It is an X. If the remaining cards are shuffled and another card is now laid ...
*February 19, 2010 by Kesha*