Friday

February 5, 2016
Number of results: 112,231

**Math-probablity**

Assume a family is planning to have three children. A. What is is the probablity of a family having 2 girls. B. The probablity of a family having at least 1 boy. C. List the sample space using a B for Boy and G for girl (Hint there should be 8 possible outcomes).
*April 26, 2013 by Angela*

**math probablity**

Assume a family is planning to have three children. A. What is is the probablity of a family having 2 girls. B. The probablity of a family having at least 1 boy. C. List the sample space using a B for Boy and G for girl (Hint there should be 8 possible outcomes). ??????
*April 26, 2013 by Angela*

**probablity**

You are off to soccer and love being a goalkeeper, but that depends who is the coach today : - with coach Ahmed the probablity of being a goalkeeper is 0.5 -with coach Usman the probability of being a goalkeeper is 0.3 Ahmed is coach more often.About 6 out of every 10 games ( ...
*May 3, 2013 by arzam*

**math**

You are off to soccer and love being a goalkeeper, but that depends who is the coach today : - with coach Ahmed the probablity of being a goalkeeper is 0.5 -with coach Usman the probability of being a goalkeeper is 0.3 Ahmed is coach more often.About 6 out of every 10 games ( ...
*May 2, 2013 by arzam*

**maths**

You are off to soccer and love being a goalkeeper, but that depends who is the coach today : - with coach Ahmed the probablity of being a goalkeeper is 0.5 -with coach Usman the probability of being a goalkeeper is 0.3 Ahmed is coach more often.About 6 out of every 10 games ( ...
*May 3, 2013 by arzam*

**math**

the probability of havingtype O blood is 1/2 and the probablity if having type A blood is 1/4. what is the probablity of a person having either typr O blood or type A blood ?
*April 29, 2012 by Anonymous*

**Help????????????????????/**

Assume a family is planning to have three children. A. What is is the probablity of a family having 2 girls. B. The probablity of a family having at least 1 boy. C. List the sample space using a B for Boy and G for girl (Hint there should be 8 possible outcomes).
*April 26, 2013 by Angela*

**Math**

How good are you with probablity
*October 13, 2007 by Ronda*

**math algegra**

one type of probablity used practically daily is?
*February 27, 2010 by Ben*

**College Math**

How are statistics and empirical probablity related? What is a specific scientific decision?
*March 27, 2009 by Vonsell*

**math**

What is the probablity of getting at least one head as a result of flipping 6 fair coins?
*June 11, 2012 by Gloria*

**AU**

What is probablity of 62 and probability of 59 with Mean of 60 and SD of 7
*March 20, 2011 by Sheri*

**math**

probablity to the nearest tenth of a percent 11/68 to a decimal and percent
*May 29, 2012 by Taylor*

**math**

An unprepared student makes random guesses for the ten true or false questions on a quiz.find the probablity that there is at least one correct answer.
*October 27, 2009 by rency*

**math-Probablity **

A packet of carrot seeds has a germination rate of 92%. In other words, the probability of any seed sprouting is 0.92. How many seedlings would you expect in a row of 50 seeds?
*June 5, 2012 by Leo*

**math**

The ages of a population of 300 is normally distributed, with a mean of 45 and a standard deviation of 4. If you randomly selected a member of the population, what is the probablity that his or her age would be greater than 49?
*June 11, 2012 by Gloria*

**statistics**

TOSS 2 PENNIES 20 TIMES. WHAT IS THE PROBABLITY OF GETTING 2 HEADS
*April 1, 2008 by HANEEN*

**Math**

The combinations on the lockers at the highschool consist of three numbers, each ranging from 0 to 39. If a combonation is chosen at random, what is the probablity that the first two numbers are multiples of 9, and the third number is a multiple of 4?
*July 21, 2008 by Jen*

**math**

if two-card hand is dealth from a well-shuffled deck of 52 cards, what is the probablity that the hand contains two kings?
*November 22, 2009 by Kay Kay*

**MATH**

you have 4 blue crayons, 2 red and 3 orange, what is the probablity of pulling a red crayon and then an orange without replacement?
*December 10, 2010 by BB*

**math**

The odds against pats winning the election are 6:7 with these odds, what is the probablity that pat will win the election.
*March 10, 2012 by karen*

**math**

How can one calculate the odds of winning the jackpot in the lottery. The probablity is the number of ways to win (usually one) divided by the number of possible entries.
*July 3, 2007 by student*

**Statistics**

If you roll two dice what is the probablity of getting one 2? I think the answer is 1/6 but I'm not sure
*October 13, 2012 by Mary*

**Probability**

if two fair dice are rolled, what is the probablity that the total showing is even or less than seven?
*July 11, 2011 by Marie*

**Statistics**

There is a random selection of 150 students. What is the probablity that the sample percentage of correct identification is greater than 75%?
*June 18, 2013 by Katie*

**math **

a bag contains 7 red marbles, 8 blue marbles and 4 green marbles. what is the probablity of choosing a blue marble?
*June 15, 2012 by Anonymous*

**math probablity- Respond as soon as possible **

Assume a family is planning to have three children. 1. Why do probabilities centered around this scenario represent the same probabilities as those for flipping three coins
*April 26, 2013 by Angela*

**math**

there are 3 miniature chocolate bars and 5 peaunt butter cups in a candy dish. judie chooses 2 of them at random. What is the probablity that both she chooses 2 miniature choclate bars?
*February 25, 2010 by amanda *

**math-Probablity **

A student is writing a multiple choice test consisting of 40 questions, each of which provides four possible choices. He is certain that he has 16 questions correct. If he guesses for all of the remaining 24 questions, what is the probability that he will pass the test?
*June 5, 2012 by demi*

**Math (Probablity**

Suppose a random variable X has mean μX = 6.3, and variance V(X) = 2.2. According to Chebyshev's Theorem, what is the upper bound for the probability that the distance between the value of X and μ will be at least 4.8? I don't even know where to start. But If I can ...
*November 10, 2015 by First Time Here :)*

**math-Probablity**

A golfer makes 80% of her putts from a distance of 5 metres or less from the hole. In order to calculate the probability that she would make 23 out of 27 putts or better on a given day, what boundary value should be chosen for X in order to find the appropriate z-score?
*June 5, 2012 by Angle*

**Math**

Ok please help me. Here is my stats question Suppose there is a 20% chance of striking oil at a certain location. An oil company drills at 5 different spots. What is the probablity of them striking oil on at least one of the spots? Any help is greatly appreciated
*February 3, 2010 by Ted*

**PROBABLITY**

the nearest tenth percent of 9/68 decimal and percent
*May 29, 2012 by Michael*

**Probability**

Find the probablity of getting a sum of at least 8 by tossing a six-sided die twice. I keep getting 5/36 but my book says 5/12.
*May 20, 2008 by Jamie*

**Math**

A bag contains 5 balls,8 white balls, 9 green balls,7 blue balls& 6 yellow balls.A ball is drawn at random .Find the probablity that the ball in neither green nor red ?
*March 8, 2012 by Rajit Rastogi*

**Math**

I'm trying to calculate probablity of dependent and independent events. For example, from 3 nickels, 2 dimes, and 5 quarters, what is the probability of drawing 1 nickel, 1 dime, and 1 quarter in that order without replacement? Or drawing the same in any order with replacement...
*December 13, 2007 by Danielle*

**Math**

I have a few questions on my homework assignment. I've been sick and I have no idea what I'm doing. Question 1: Assume the hights of high school bball players are normally distributed. For the boys the mean is 74" with a standard deviation of 4.5" while girl players have a ...
*March 30, 2008 by Amanda*

**statistics**

1- The ages of a population of 300 is normally distributed, with a mean of 45 and a standard deviation of 4. If you randomly selected a member of the population, what is the probablity that his or her age would be greater than 49?
*June 11, 2012 by Gloria*

**STATISTICS**

ASSUME THE THE MEAN WEIGHT OF CHILDREN AGES 7 IS 50 POUNDS AND A STANDARD DEVIATION OF 10. wHAT IS THE PROBABLITY THAT A RANDOM SELECTED 7 YEAR OLD WILL HAVE A WEIGHT THAT IS LESS THAT 65
*February 11, 2013 by SONIA GOVAN*

**Math**

In Lloyd's pocket are 6 coins: 3 dimes, 2 nickels, and 1 penny. If Lloyd randomly takes two coins out of his pocket, what is the probablity that he will take out 11 cents? The book shows the answer 1/5, but my question is wouldn't the number of each coin come into play?
*January 26, 2010 by Teri*

**Math**

A vendor has 14 hellium ballons for sale: 9 are yellow, 3 are red, and 2 are green. A ballon is selcted at random and sold. If the ballon sold is yellow, what is the probablity that the next ballon selected at random, is also yellow?
*April 18, 2011 by ashely*

**statistics**

Scores for men on the verbal portion of the SAT-1 test are normally distributed with a mean of 509 and a standard deviation of 112. If a man is randomly selected, find the probablity tht his score is at least 571
*July 24, 2014 by jo ann*

**probablity**

A bag of marbles has 3 red, 6 blue, and 3 white marbles in it. What is the probability of reaching in and selecting a red marble? (without looking
*June 15, 2012 by whit*

**Probablity**

What are the odds against an earthquake occuring on a certain day in a certain area if the odds of it occurring is 0.05?
*October 18, 2009 by Paulette*

**math help please**

two cards are dealt in succession from a standard deck of cards. what is the probability that the second card is red give that the first card was a heart. so i do p(R/H), then i know you go R*H/H. but how do i get the probability please explain! thanks. if 2 dice are rolled, ...
*January 19, 2009 by Kennedy*

**math**

A drawer contains 4 red socks, 3 white socks, and 3 blue socks. without looking, you select a sock at random, replace it and seect a sond sock at random. what is the probablity that the first sock is blue and the second sock is red?
*May 21, 2012 by Melanie*

**elementary statistics**

at a particular school with 200 male students, 58 play football 40 plays basketball and 8 plays both. what is the probablity that a randomly selected male student plays neither
*October 10, 2011 by dorothy*

**Probablity**

Two dice are tossed simultaneously. What is the probability that “either the sum of top faces of dice is six or both top faces are similar”?
*March 24, 2015 by Ali*

**Algebra1**

A CELL PHONE ORDDERS 500 NEW PHONES FROM A MANFACTURE.IF THE PROBABLITY OF A PHONE BEING DEFECTIVE IS 2.6% PREDICT HOW MANY OF THE PHONES ARE LIKELY TO BE DEFECTIVE.ROUND TO THE NEAREST WHOLE NUMBER
*December 5, 2011 by devin*

**Statistics**

A statistics professor plans her classes so carefully that the lengths of her class are uniformly distributed between 46.0 and 56.0 minutes. Find the probablity that given class period runs less than 51.75 minutes
*November 27, 2013 by Jamie*

**math**

I have a question in my math class in college. Here is the question, but I just need help on HOW to answer it. My text isn't clear at all. A box contains 2 black balls and 3 gold balls. 2 balls are randomly drawn in succession. a.if there is no replacement, what is the ...
*November 18, 2009 by Lauren*

**math**

Delta airline flights seats 340 people. An average of 5% of the people with reservations doesnt show up, so they overbook by 350. This system can be analyzed by using binomial distribution. n=350 and p=0.95 1) Find the probablity that 350 reservations there are more passangers...
*April 6, 2008 by mel*

**statistics**

78% of us homes have a telephone. In a random sample 250 homes, what is the probablity that fewer than 50 do not have telephone
*July 23, 2011 by debbie*

**statistics probablity**

Each time that Ed Charges an expense to his credit card, he omits the cents and records only the dollar value. If this month he has charged his credit card 20 times what can be said about the probability that the record shows at least $15 less than the actual amount?
*December 16, 2010 by Joe*

**statistics**

You draw two card from a standard deck of 52 cards and replace the first one before drawing the second. Find the probablity of drawing a 4 for the frist card and a 9 for the second card
*June 26, 2010 by Clay*

**Probability**

Given the probability of rain on any given day in March is 1/5, find the probablity that: It rains on March 10 and 12, but not on March 11th. This is supposed to be used with multiplication Rule 1: P(A and B)= P(A)*P(B) cant figure it out, the answer is 4/125 and I have no ...
*January 24, 2013 by anoneemose*

**Statistics**

Ok please help me. Here is my stats question Suppose there is a 20% chance of striking oil at a certain location. An oil company drills at 5 different spots. What is the probablity of them striking oil on at least one of the spots? Any help is greatly appreciated
*February 3, 2010 by Aaron*

**binomial distribution**

hey, i'd really appreciate some help with this question: A medical treatment is successful 75% of the time. A hospital wishes to treat a group of patients. How many patients should they take so that the probablity that all are cured is 1/10? I know that p=0.75 and q=0.25 but i...
*August 25, 2007 by elle*

**Probablity**

Last semester, a certain professor gave 43 As out of 242 grades. If one of the professor's students from last semester were selected randomly, what is the probability that student received an A? (Assume that each student receives one grade.)
*August 26, 2013 by Patty*

**statistics**

The director of a health club conducted a survey and found that 23% of memebers used only the pool for workouts. Based on this information, what is the probablity that for a random sample of 10 members, 4 used only the pool for workouts? Please show work Thank you
*June 27, 2011 by Harley*

**Biology **

If it happens that a neurotransmitter binds to a receptor site and produces a negative voltage, the probablity: A) that the neurons are densely connected increases B) of an excitatory response increase C)That the receiving neuron will fire decrease D)that the transmitting ...
*August 31, 2010 by Rena*

**Statistics**

Suppose that about 25% of those called will find and excuse (work, poor health, etc) to avoid jury duty. If 12 people are called for jury duty, what is the probablity that 4 or more will not be available to serve on the jury? Please show work Thank you
*June 27, 2011 by Harley*

**Statistics**

In the past year, Jack's Pizaa Resturant grossed more than $1500 a day for about 83% of its business days. Suppose 8 days are randomly selected, approximate the probablity that exactly 6 days will gross more than $1500 in a day.
*March 31, 2015 by Kim*

**statistics**

Three percent of the widgets produced by machine 1121 are defective. what is the probablity that a box of 30 widgets produced by that machine contains two or more defective widgets?
*December 10, 2011 by John*

**statistics**

This table shows claims and their probablity for an insurance company. AMOUNT OF CLAIM PROBABILITY $0 0.65 $50,000 0.25 $100,000 0.06 $150,000 0.02 $200,000 0.01 $250,000 0.01 1. Calculate the expected value? 2. How much should the company charge as an average premium so that ...
*November 28, 2011 by Anonymous*

**math**

break it down into cases at most one day of rain in 3 days to me means we could have: norain norain norain ----> (1/3)^3 = 1/27 rain norain norain -------> 2/3(1/3^2 = 2/27 norain rain norain -------> same as above = 2/27 norain norain rain -------> same as above...
*May 17, 2007 by Reiny*

**Finance**

Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each state State Prob Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 If the company's dept-to-equity ratio is .5...
*April 18, 2008 by Teresa*

**Finance**

Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each state State Prob Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 If the company's dept-to-equity ratio is .5...
*April 18, 2008 by Teresa*

**finance**

Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each state State Prob Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 If the company's dept-to-equity ratio is .5...
*April 20, 2008 by teresa*

**finance**

Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each state State Prob Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 If the company's dept-to-equity ratio is .5...
*April 21, 2008 by teresa*

**finance**

Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each state State Prob Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 If the company's dept-to-equity ratio is .5...
*April 22, 2008 by teresa*

**finance (Repost)**

Following are rates of return on a medical equipment company stock, debt, and market portfolio, along with probablity of each state State Prob Ret.on Stock Ret.on Debt Ret.on Market 1 .1 3 8 5 2 .3 8 8 10 3 .4 20 10 15 4 .2 15 10 20 If the company's dept-to-equity ratio is .5...
*April 23, 2008 by teresa*

**Probablity **

A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a black marble, replacing it, and then picking a black marble?
*June 19, 2015 by Destiny*

**Probablity **

The life time of a certain kind of batteries has a mean life of 400 hours and standard deviation as 45 hours. Assuming the distribution of life to be normal, find i) the percentage of batteries with a life time of atleast 470 hours. Ii) Out of 10000 batteries how many ...
*October 1, 2015 by Kruti*

**maths please check my answer**

paul orders a pizza. chef carl randomly chooses two different toppings to put on the pizza from the following:~ pepperoni, onion, sausage, mushrooms and anchovies. if paul does not eat pizza with mushrooms, determine the probablity that paul will not eat the pizza that chef ...
*November 8, 2008 by Anonymous*

**Math: Probablity**

A penny, a nickel, and a dime are flipped at the same time. Each coin can come out either heads (H) or tails (T). a. What name is given to the act of flipping the coins? b. There are eight elements in the sample space (i.e., HHH,THT, etc.). List all eight outcomes. c. How many...
*February 15, 2014 by Anonymous*

**Statistics**

According to Pew Research, the contact rate (probability of contacting a selected household) in 1997 was 69% and in 2003 was 76%. However, the cooperation rate (proability of someone at the contacted household agreeing to be interviewed) was 58% in 1997 and dropped to 38% in ...
*February 25, 2008 by Danielle*

**Statistics**

In his management information systems textbook,Professor David Kroenke raises and interesting point:"If 98% of our market has Internet access,do we have a responsibility to provide non-Internet materials to that other 2%?Suppose that 98% of the customers in your market have ...
*April 9, 2013 by John *

**Pre-Algebra**

So since 2/3 of Spinner 1 is sedans (The 3rd is a truck), and 1/2 of Spinner 2 is purple (the other half is a green), write a multipilcation problem to describe the probability of spinning a purple sedan. Write a problem to describe the probability of spinning a purple truck. ...
*November 8, 2007 by Ellen*

**Pre-Algebra**

So since 2/3 of Spinner 1 is sedans (The 3rd is a truck), and 1/2 of Spinner 2 is purple (the other half is a green), write a multipilcation problem to describe the probability of spinning a purple sedan. Write a problem to describe the probability of spinning a purple truck. ...
*November 8, 2007 by Ellen*

**math-Probablity**

Hi, just a few stupid questions about probability. 1. How many different license plates can there be if there is a total of 7 letters (no numbers) (and I'm assuming this has a something to do with permutation. 2. How many different batting line ups can be chosen from a 13 man ...
*April 14, 2011 by Connor*

**M361**

A factory worker productivity is normally distributed. worker A produces an average of 84 units per day with a standard deviation of 24. worker B produces at an average rate of 74 units per day with stanard deviation of 25. (a) what is the probability that in any single day ...
*April 7, 2013 by mercy*

**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*

**Geometry/Probablity**

Of all the Sunny Club members in a particular city, 25% prefer swimming on weekends and 75% prefer swimming on weekdays. 10% of the members in the city prefer swimming on weekends and are female. 55% of the members in the city prefer swimming on weekdays and are female. What ...
*April 30, 2014 by Kiley*

**math**

A standard deck of cards has had all the face cards (Jacks, queens, and kings) removed so that only the ace through ten of each suit remains. A game is played in which two cards are drawn (without replacement) from this deck and a six-sided die is rolled. For the purpose of ...
*February 24, 2011 by Joey*

**math-independent and dependent events**

A card is chosen at a ramdom from a deck of 52 cards.It is then replaced and a second card is chosen.What is the probability of getting a jack and then an eight? getting a jack 4/52. Then getting an eight 4/52 Probability of getting a jack and then an eight, given those are ...
*January 28, 2007 by Jocelyn*

**algebra**

Mrs. Stewart has 8 pair of sandals, 6 pairs of pants and 12 t-shirts. While getting ready to go out for ice-cream, she exclaims, "I have nothing to wear!" Mr. Stewart respond by telling her exactly how many different outfits she could wear if each outfit considered of a pair ...
*January 18, 2009 by angela*

**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*

**Probablity**

Samir had prepared the problem tests for Stages 1 to 5 of Geometry and Combinatorics for next week but forgot to label which test was for which stage. Since Samir didn't label them, the computer assigned them labels 1 through 5 randomly, with each label appearing only once. ...
*May 14, 2013 by Mathslover*

**Probability**

This is an example question, but I'm not sure how my instructor came up with the answer. Could anyone explain in detail please. Among the contestants in a competition are 49 women and 29 men. If 5 winners are randomly selected, what is the probability that they are all men. ...
*October 29, 2006 by Mary*

**math**

i would like any help or suggestions you have please as i am very stcuk on these questions thanks here is the scene: each phone call made to the emergency services has probability 0.02 that it is not legitimate. assume that the legitimacy of one call is independant of weather ...
*April 20, 2007 by smartypants*

**Probability**

Roll two fair dice. what is the probability that you get a 2 and a 5 without regard to which is on which die? What is the probability of at least one 2 or one 5? What is the probability of a sum of 7? "what is the probability that you get a 2 and a 5 without regard to which is...
*December 3, 2006 by Pam*

**Statistics**

A specially equipped trauma emergency room at a hospital has been in operation for 40 weeks and has been used a total of 108 times. Assuming the weekly pattern of demand for this facility is poisson compute the following - probability room is not used in a given week ...
*March 2, 2007 by Jason L*

**Statistics**

Many women take oral contraceptives to prevent pregnancy. Under ideal conditions, 1% will become pregnant within one year. In typcal use, 5% become pregnant. Choose 20 random women taking the pill. How many become pregnant in the next year? a. What is the probability that at ...
*August 4, 2010 by Dawn*

**7th grade math (probability)**

1. Cmdr's coffee shop offers a coffee special with coffee syrups of vanilla, chocolate, and caramel. You can also choose between a latte, and cappuccino. How many different coffees can you make for the special? Ans: 6 (VLatte, ChocLatte, CLatte; VCap, ChocCap, CCap) 2. Edwin ...
*May 5, 2015 by Alexis*

**Probablilty**

2 questions Roll a fair 6 sided die 3 itmes. What is the probablity that you obtain at least one 5? Use the binomial. A 28 yr old man pays $208 for a 1 year life insurance policy with coverage of $110,000. If the probability that he will live through the year is .9993, what is...
*April 30, 2007 by Liz*

**Math...For All Math Tutors**

I would like to know how many of the people answering math questions here are current math teachers, were math teachers at one time, are current tutors working for a tutoring company or simply love math. What's your story? I would love to hear from all math tutors. Thanks, ...
*February 15, 2008 by Guido*

**math**

all i can say is math stinx dont mess with math. without math, a lot of things wouldn't exist right now...
*October 9, 2006 by Anonymous*

**math**

What is temperature when you do math. In seventh grade math is hard and I don't understand what my teachers tell me they say that it is easy but i don't think it is i need a lot of help during math it used to be my favorite subject but now its not
*November 30, 2015 by Maria*

**mathmatics probability**

I am having with the following questions and was wondering if someone might be able to show me a step by step solution to arrive at the answer. They are from Probablity and Statistics for Enginnering and the Sciences by Jay Devore 6th Edition 62) An airport limousine can ...
*February 7, 2007 by ajones51*