Sunday

December 21, 2014

December 21, 2014

Number of results: 7,494

**probability**

if a fair coin is tossed 4 times, what is the probability of getting heads the first 3 times, and tails the fourth itme?
*May 10, 2011 by kristy*

**Math-probability**

One card is selected at random from a deck of cards. Determine the probability that the card is a black heart.
*July 19, 2011 by Jen*

**Math - Probability**

what is the probability of getting two sets of 8 digit numbers having 5 digit are the same number and order.
*July 22, 2011 by Tracy*

**Math**

The probability that Aaron sees Hannah on any given day is 1/2. What is the probability that he sees her 3 out of all 5 days this week?
*July 31, 2012 by Trisha*

**math**

for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x succes n=5,p=1/3, x=4
*November 19, 2012 by Katarzyna*

**math**

for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x succes n=5,p=1/3, x=4
*November 20, 2012 by Andrew*

**math**

for n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x succes n=5,p=1/3, x=4
*November 20, 2012 by Andrew*

**Probability**

If 5 juniors and 4 seniors apply for a job at a school which has 2 openings, what is the probability that 1 junior and 1 senior will be randomly chosen for the job.
*April 19, 2013 by Jane*

**probability**

Find the probability of seeing at most 5 dots, but also an odd number of dots when 2 fair dice are rolled.
*April 21, 2014 by heny*

**math check probability **

A number cube with the numbers 1 through 6 is rolled. Find the given probability. ---------------------------------------- 2. P(number ≥ 3) A. 4/6 B. 1/6***** C. 2/6 D. 5/6
*May 3, 2014 by me*

**math**

The overall probability of a student failing an exam is 40%. Calculate the probability that in a group of 6 students, at least 4 passed the exam.
*December 13, 2014 by susan*

**statistics**

A fast food chain claims that all of its quick win soda cups are winners. (There is a little tab you pull off the side of the cup which says either you are a winner or not. Lisa bought 8 sodas to try her luck. What is the probability that at least 5cups were winners? What is ...
*March 23, 2012 by lola*

**statistics**

Three horses, A, B and C are in a race. A and B have the same probability of winning, and each is twice as likely to win as C. Find the probability of B or C winning.
*March 19, 2009 by Carline*

**Statistics - Monte's Dilemma**

Why does it make a difference when you switch doors? What is the probability of winning given that you stayed and what is the probability given that you switched?
*October 15, 2009 by Bob*

**math probability **

3 people are selected at random without replacement out of 12 girls and 3 boys. What is the probability of selecting all girls?
*April 19, 2011 by Anonymous*

**Probability**

7) Suppose that you roll a pair of standard 6-sided dice a total of 42 times. What is the probability that you will get a sum of 5 at least four times?
*March 22, 2012 by Anne*

**probability**

A company manufactured 1, 000 televisions. Testing showed that 20 of the televisons were defective. What is the experimental probability that the next television will be defective?
*April 18, 2013 by ashley*

**Math**

Choose a natural number between 1 and 100, inclusive. What is the probability that the number chosen is not a multiple of 4? (Enter the probability as a fraction.)
*June 12, 2013 by Ronald*

**Math- Probability**

A committee of five people is to be formed from six lawyers and seven teachers. Find the probability that none are lawyers.
*July 29, 2013 by Ted*

**mathematics Probability**

A simple 5_sided spinner is numbered 1,2,3,4,5.On spinning the spinner once,what is the probability of getting a prime and an even number?
*November 3, 2014 by thessa*

**Statistics and Probability**

Winning the jackpot in a lottery requires that you select the correct three numbers between 1 and 51 and in a another separate drawing you must select the correct single number between 1 and 15. Find the probability of winning the jackpot- The probability of winning the ...
*October 13, 2014 by Macy*

**Math**

Probability -if desks are grouped by 4 and if there are 11 boys and 13 girls in a class what is the probability that I will get placed in a group of all girls?
*October 14, 2008 by Olivia*

**Probability**

A number cube, numbered 1 through 6, is rolled once. What is the probability of rolling an even number that is not prime? 1/6 1/3 1/2 2/3
*July 22, 2010 by Ross*

**probability**

Let A and B two mutually exclusive events of a sample space S. If P(A)=0.6, P(B)=0.2 , find the probability of each of the following events a)P(A ∩ B)
*July 25, 2010 by anonymous*

**probability**

If you pick a number completely at random from the natural numbers between 1 and 42, find the probability that the number is a multiple of 3.
*October 4, 2010 by Anonymous*

**math probability**

a 3 section spinner which each outcome is not equally likely.if you spin the spinner once,what is the probability that it will stop on a?
*May 7, 2012 by jay*

**RES/351**

under what conditions would you recommend the following probability sample non–probability sample
*July 14, 2012 by a*

**probability**

if 2 white balls are drawn a box of 5,find the probability that all are white using bayes theorem
*August 31, 2012 by akshay*

**Math**

Is this correct? If one card is drawn from a regular deck of cards,what is the probability the card will not be an ace? 1/13 is the probability
*November 9, 2012 by Alex*

**statistics**

Consider the probability that less than 13 out of 151 CDs will be defective. Assume the probability that a given CD will be defective is 12%
*March 25, 2013 by Tammy*

**Probability**

the expected number of defects in a particular size is 5. What is the probability of getting one or less defects in the sample
*April 22, 2014 by Nedge5q*

**math**

I hope i am on the right track. Please look at my answer so I am doing correctly. The letters of the word mathematics are written on separate pieces of paper and put in a hat. What is the probability of drawing a vowel from the hat? (vowels are a, e, i, o u.) Number of letters...
*July 7, 2012 by Bria*

**Business Statistics**

John & Jane are married. The probability that John watches a certain television show is .4. The probability that Jane watches the show is .5. The probability that John watches the show, given that Jane does, is .7. 1) find probability that both John & Jane watch the show. 2) ...
*June 21, 2011 by CC*

**Probability and statistics**

The probability that the life time of randomly chosen device is below average, average,above average are respectively 0.2,0.5,0.3. The probability that of the 3 randomly chosen devices lifetimes of 2 are above average and 1 below average equals a.0.054,b.0.018,c.0.036,d.0.012
*March 1, 2012 by Arun*

**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!*

**college**

Four hundred people apply for three jobs. 130 of the applicants are women. (a) If three persons are selected at random, what is the probability that all are women? (b) If three persons are selected at random, what is the probability that two are women? (c)If three persons are ...
*March 25, 2010 by kay*

**math - probability and statistics**

P(E)=.4, P(F)=.5 and P(E[intersect]F)=.1 , Calculate P(F[suchthat]E)=? Using conditional probability, I got .2 as the answer, right? Is the answer the same for P(EsuchthatF)?
*August 31, 2009 by Dee*

**math**

Consider the experiment of rolling a single die. Find the probability of the event described. What is the probability of rolling a number less than or equal to 4?
*April 12, 2010 by KiKi*

**probability**

If you were to spin a spinner that had eight equal parts labled 1-8 three times what is the probability that all three numbers are (3 or greater than five)?
*April 20, 2010 by lucky*

**ststistics**

each tire of an 18 wheeler has a probability of 5% TO maintain on a 10000 mile trip. WhAt is the probability that no more than 3 tires need maintenance during this trip. How do i do this?
*January 20, 2011 by pat *

**math-probability**

I have to do a math project using probability. I thought I might use Go Fish cards but I am not what kind of questions to ask can you help please?
*February 25, 2012 by christy*

**MATH**

tree diagra probability: tree diagram with three equal parts, what is the probability, if we spin twice of getting at least one a
*April 1, 2012 by John*

**Math Probability**

At a political rally there are 20 republicians 13 democrates 6 independents. if a person is chosen at random what is the probability that the person is either a democrate or and independent?
*April 16, 2012 by Antonio*

**Math: Geometry**

If 0 < y < 1 and 0 < x < 1, find the probability that y < x. Begin by sketching te graph, and then use the area method to find the probability. Please help me. I do not understand. Thank you in advance!
*April 23, 2012 by Rose*

**Math: Geometry**

If 0 < y < 1 and 0 < x < 1, find the probability that y < x. Begin by sketching te graph, and then use the area method to find the probability. Please help me. I do not understand. Thank you in advance!
*April 24, 2012 by Rose*

**Math Probability**

Using a standard deck of 52 cards find each probability. 1.)King, queen, or black card 2.)Spade or hearts card
*March 14, 2013 by B1nary*

**probability**

Given that there were 4 Heads in the first 7 tosses, find the probability that the 2nd Heads occurred at the 4th toss. Give a numerical answer.
*February 27, 2014 by jon*

**algebra**

Choose a natural number between 1 and 100, inclusive. What is the probability that the number chosen is not a multiple of 5? (Enter the probability as a fraction.) Thank you it is appreciated.
*May 27, 2014 by Mary Ann *

**statistics**

Let E and F be two events for which the probability of atleast one of them occurs is 3/4. what is the probability that neither E nor F occurs? The hint is to use Demorgan's laws
*September 10, 2014 by rebecca*

**Math : Probability and Standard Deviation**

This is a word problem. "We know that for certain workers the mean wage is $5/hr with a standard deviation of $.50. We need to find out if a worker is chosen at random what is the probability that the workers' wage is between $4.50 and $5.50? Assume a normal distribution of ...
*October 23, 2007 by Tiffany Johnson*

**Statistics/Probability**

5) The product is sold in packets whose masses are normally distributes with mean of 1.42 kg and a standard deviation of 0.025 kg. (1) Find the probability that the mass of a packet, selected at random, lies between 1.37 kg and 1.45 kg
*July 17, 2014 by Koylar*

**math**

Suppose an event has a probability of p. What can you say about the value of p? What is the probability that the event will not occur? Explain
*August 26, 2008 by Jope*

**math**

probability... two dice are tossed.... and their sum is recorded ..find probability p ( sum is between 2 and 9)
*August 25, 2010 by tana*

**Probability**

A card is drawn at random from a deck of 52 cards. What is a probability that it is a King, given that it is a face card (J, Q, K)?
*October 12, 2010 by vika*

**PROBABILITY**

A card is drawn at random from a deck of 52 cards. What is a probability that it is a King, given that it is a face card (J, Q, K)?
*October 19, 2010 by JHONY*

**Probability**

A card is drawn at random from a deck of 52 cards. What is a probability that it is a King, given that it is a face card (J, Q, K)?
*October 19, 2010 by JHONY*

**Probability**

A card is drawn at random from a deck of 52 cards. What is a probability that it is a King, given that it is a face card (J, Q, K)?
*October 19, 2010 by JHONY*

**PROBABILITY**

A card is drawn at random from a deck of 52 cards. What is a probability that it is a King, given that it is a face card (J, Q, K)?
*October 19, 2010 by JHONY*

**Probability **

A pair of fair dice is tossed 3 times. Find the probability a seven appears 3 times.
*February 20, 2011 by Traci*

**Probability**

In a raffle there are four winning tickets from 12, What is the probability from six tickets there are two winners? Thank you in advance.
*May 12, 2012 by William*

**probability**

two dice are tossed. find the probability that the sum is odd given that the sum is 5 or less
*June 12, 2012 by Anonymous*

**statistics**

The probability that a house is burglarized in the city is 5%. If 50 houses are randomly selected, what is the probability that none will be burglarized?
*July 14, 2012 by Sherry*

**math**

empirical probability and theoretical probability of 2 tails - 210 1 tail - 480 0 tail - 310
*April 29, 2014 by yamille *

**probability **

90%of a countrys population are a right handed . what is the probability that exactly 29 people in a group of 30 are right handad?
*June 19, 2014 by Elin*

**probability in math**

can anyone help me with a probability question?
*October 6, 2008 by puzzled*

**algebra I**

If you toss a coin, the probability of gettig heads is 1/2. If you toss a coin 2 times. the probability of getting heds each time is 1/2*1/2 or (1/2)^2. -Write an expression to represent the probability of tossing a coin 'n' times and getting 'n' heads. -Express your answer to...
*February 7, 2008 by Joanne*

**Probability**

Clara Nett is quite good and figures that her probability of playing any one note right is 99%. The solo has 60 notes. a. What is her probability of each of the following? 1. Getting every note right. My answer: 0.547 I am stuck on problems 2-5 because when I set up the nCx I ...
*February 28, 2014 by Anonymous*

**Probability 3**

When confronted with an in-flight medical emergency, pilots and crew can consult staff physicians at MedAire, an emergency facility in Tempe, Arizona. If MedAire is called, there is a 4.8 percent chance that the flight will be diverted for an immediate landing. a. Expected ...
*November 2, 2009 by Janice *

**probability**

for a small regional airline, the number of claims for missing luggage averages 70 per week. a. what is the probability that on a given day, there are fewer than 3 claims made against the airline? b. what is the probability that there are more than 3 claims against the ...
*January 22, 2013 by Jen*

**statistics**

Needing some help to clarify this problem and help finding the right answer. _b___ 2. Which of the following accurately describes the critical region? a. outcomes with a very low probability if the null hypothesis is true b. outcomes with a high probability if the null ...
*December 29, 2013 by Lyn*

**probability**

A pizza shop offers nine toppings. No topping is used more than once. What is the probability that the toppings are pepperoni, onions, olives, and mushrooms?
*October 8, 2009 by Sharon*

**Math**

Assume that the probability is 1/2 that a baby born is a boy. If a couple has two children, what is the probability that both are girls? Assume that births are independent of each other.
*February 21, 2010 by Lyndse*

**math probability**

there are 3 nickles 2 dimes and 5 quarters in a purse. the three coins are selected in succession at random. find the probability of selecting2 nickles , then a quarter.
*March 31, 2011 by carly*

**probability**

use 3 colors; one color has half probability, every segment is next to a different color; in a circle divided in 8 equal segments
*February 9, 2012 by dana*

**statistics**

Find the mean of the given probability distribution. The number of golf balls ordered by customers of a pro shop has the following probability distribution.
*February 12, 2012 by mary*

**math**

A pair of dice are rolled find the following, a) the probability of doubles, b) the odds in favor of a sum greater than 2, c) the probability of sum that is even and less than 5
*November 26, 2012 by Katarzyna*

**posibility**

A pair of dice are rolled find the following, a) the probability of doubles, b) the odds in favor of a sum greater than 2, c) the probability of sum that is even and less than 5
*November 26, 2012 by Katarzyna*

**math**

A pair of dice are rolled find the following, a) the probability of doubles, b) the odds in favor of a sum greater than 2, c) the probability of sum that is even and less than 5
*November 26, 2012 by Andrew*

**math**

A pair of dice are rolled find the following, a) the probability of doubles, b) the odds in favor of a sum greater than 2, c) the probability of sum that is even and less than 5
*November 26, 2012 by Andrzej*

**5th grade math**

A coin is tossed twice. What is the probability of tossing 2 tails? What is the probability of tossing 1 tail & 1 head? can you please show me how to do this problem?
*January 8, 2014 by stephon*

**Probability???**

The probability of a CD case being defective is 1/520. If the factory makes 7,800 cases per week, how many are likely to be defective? I don't understand this its so confusing :(
*June 3, 2014 by nonononono*

**finite math (probability**

suppose you toss a coin 100 times and get 57 heads and 43 tails. Based on the results what is the probability that the next toss will be head.
*June 17, 2014 by carol*

**maths**

3 and 5 of spade, king and queen of club , 7 and 9 of diamond and ace of heart are removed (i) find the probability its a red card (ii) find the probability its neither king nor queen (iii) find the probability its a face card (iv) That its a black coloured card (v) that its a...
*February 16, 2014 by tuhituhi*

**Statistics**

On a very short quiz, there is one multiple choice question with 5 possible choices (a, b, c, d, e) and one true or false question. Assume you are taking the quiz but do not have any idea what the correct answer is to either question. You mark an answer to each question anyway...
*July 8, 2011 by Cassie*

**stats**

Between 11 P.M. and midnight on Thursday night, Mystery Pizza gets an average of 5.7 telephone orders per hour. a) Find the probability that at least 32 minutes will elapse before the next telephone order. b) Find the probability that less than 17 minutes will elapse. c) Find ...
*October 31, 2010 by anonymous*

**stats**

if you randomly answer a t/f test and want to figure the possibililty of gettng at least an 80......how do you start and then once you have done this, what if you want to try it 4 more times? HELP Let N be the number of questions. You are asking for the probability of getting ...
*July 5, 2007 by holly*

**Data Management**

Two cards are drawn from a standard 52 card deck. a) what is the probability that both cards drawn are black? b) what is the probability that one card is red and the other is black? c) what is the probability that a two face cards are drawn? d)what is the probability that two ...
*March 3, 2010 by Jud*

**Math-Probability**

Data collected on volcanic eruptions give a mean time between eruptions of 29 months. Assume these eruptions occur as a Poisson process in time, find the: (a) Expected number of eruptions during the five-year period beginning from the time you have read this question. (b) ...
*January 22, 2012 by sand*

**Statistics-Probability**

Data collected on volcanic eruptions give a mean time between eruptions of 29 months. Assume these eruptions occur as a Poisson process in time, find the: (a) Expected number of eruptions during the five-year period beginning from the time you have read this question. (b) ...
*January 22, 2012 by sand*

**Statistics-Probability**

Data collected on volcanic eruptions give a mean time between eruptions of 29 months. Assume these eruptions occur as a Poisson process in time, find the: (a) Expected number of eruptions during the five-year period beginning from the time you have read this question. (b) ...
*January 24, 2012 by sand*

**statistics**

According to Advertising Age, the average base salary for women working as copywriters is $66,000. Assume that the salaries are normally distributed and that the standard deviation is $7,500. a. What is the probability of a woman receiving a salary between $60,000 and $75,000...
*June 25, 2013 by petrit*

**probability**

1) A secret admirer has been leaving you roses at the rate of 4/day. What is the probability that, on a given day, you will receive (a) exactly one rose (b) at least one rose? 2) Every student has a 1 in 9 chance of winning a certain prestigious scholarship. What is the ...
*May 4, 2011 by Anonymous*

**statistics**

Suppose that in a particular year the probability of a college student being part-time was 0.43. For part-time students, the probability of being male was 0.33. For full-time students, the probability of being male was 0.42. Find the probability of a college student being male.
*February 10, 2011 by Amiee
*

**stats**

A jar contains 7 black balls and 25 red balls. You take 2 out without replacing them. Find a)the probability of drawing 2 red balls in a row, b) the probability of drawing a red ball, then a black ball, c) the probability that the two balls will be of different colors
*December 18, 2014 by Sally*

**Intro Statistics**

Please let me know if I'm on the right track. Probability of Computer Failures. A PC World survey of 4000 personal computer owners showed that 992 of them broke down during the first two years. (The computers broke down, not the owners.) In choosing among several computer ...
*October 8, 2006 by Mary*

**bus stats**

A manufacturing company has 5 identical machines that produce nails. The probability that a machine will break down on any given day is .1. Define a random variable X to be the number of machines that will break down in a day. a. what is the appropriate probability ...
*March 25, 2011 by Mich Mich*

** Math Urgent**

17. A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probability. Write the probability as a fraction in simplest form. a. Find the theoretical probability of selecting a pink rubber band. b. Find the ...
*April 17, 2013 by Anonymous*

**Probability**

Just wanted to confirm that this is right since I really don't know cards well is the probability of drawing a queen, given that it is a face card from a standard 52 card deck 1/3?
*December 18, 2008 by Juliette*

**Math**

Assume the probability is 1/2 that a child born is a girl. If a family has three children, what is the probability that they have a) exactly one girl b) at most two boys?
*January 10, 2011 by Nicole*

**7th grade math**

If the theoretical probability of rolling a 3 is 1/6, what is the experimental probability of rolling a 3 if the cube is rolled 300 times? Need a formula to show answer.
*March 29, 2011 by hunter*

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