Sunday

September 21, 2014

September 21, 2014

Number of results: 54,003

**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**

A couple intends to have four children. Assume that having a boy and girl is equally likely event. a) List sample space b) Find the probability that couple has two boys and two girls; c) Find the probability that couple has at least one boy
*January 23, 2012 by juan777*

**statistics**

Ignoring twins and other mutiple births, assume babies born at a hospital are independent events with the probability that a baby is a boy and the probability that a baby is a girl both equal to 0.5. Referring to the information above, the probability that at least one of the ...
*September 19, 2007 by Anonymous*

**Statistics**

Supposed (as is roughly correct) that each child born is equally likely to be a boy or a girl and that sexes of successive children are independent. If we let BG mean that the older child is a boy, and the younger child is a girl, then each of the combinations BB, BG, GB, GG ...
*May 28, 2011 by Chelsea*

**statistics**

3. A couple is planning on having four children. Assume that the probabilities of the man fathering a boy or a girl are .50 and .50, respectively. What is the probability that a. exactly two will be boys, b. fewer than two will be boys, and c. more than one will be a boy? ...
*June 7, 2013 by Lynn*

**Probability**

I have two children. One of them is a boy born on a Tuesday. What is the probability they are both boys?
*August 30, 2010 by Diane*

**probability**

a couple is planning to have three children. Find the probability that the couple will have: a.) 2 girls and 1 boy? b.) 2 girls followed by a boy? c.) at least 1 girl? please answer my question thank you very much, have a good day!
*September 21, 2012 by nitz*

**maths**

Hi Can anyone help please: Suppose that the births of boys and girls can be modelled by rollling a fair die with 27 faces, 14 of which represent a boy and 13 represent a girl. 1. Using this model, choose the option that is closest to the probability that a couple who continue ...
*March 14, 2011 by Claire*

**maths**

Hi Can anyone help please: Suppose that the births of boys and girls can be modelled by rollling a fair die with 27 faces, 14 of which represent a boy and 13 represent a girl. 1. Using this model, choose the option that is closest to the probability that a couple who continue ...
*March 16, 2011 by Claire*

**math**

Suppose that China’s population policy is modified so that every family could have children until either a boy is born or until a maximum of four children are born, whichever comes first. Assume that every family chooses to have as many children as possible under this policy, ...
*May 11, 2013 by emma*

**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*

**Statistics**

A study shows that the probability of a baby being born with gene x is 0.6. The probability of a baby being born with gene y is 0.7. (a)What is the probability of being born with both genes assuming that the probabilities are independent? (b)In fact; 90% of those born with ...
*August 17, 2011 by waqas*

**statistics**

Your best friend is 5 months pregnant and wants you to be there when the baby is born. Since the baby was conceived on Labor Day, the delivery might coincide with your annual trip to cabo. the doctor tells you that the gestation period for humans is normally distributed with a...
*February 17, 2008 by lauren*

**stat**

couple plans to have four children what is the probability that three are girls and one is a boy
*January 26, 2014 by jerry*

**math**

What is the probability that exactly three children in a family of five children will be boys? Assume that P(boy)=P(girl)
*March 9, 2010 by Andrew*

**odds of...**

Does anyone know the odds of having Two girls as children as opposed to two males or one male and one female? I say it is 25 percent but my friend says it is 33.3 percent. Can anyone clarify? Thanks! You are correct. Assuming tht boy and girls are equally probable each time, ...
*August 8, 2005 by Lynn*

**Math**

An upscale department offers its customers free gift wrapping on any day that they spend at least $100. The store offers 5 box sizes (XS, S, M, L, XL), 6 wrapping themes (birthday, wedding, baby girl, baby boy, anniversary, and all-occasion), and 3 styles of bow (classic, ...
*February 19, 2008 by Mike*

**math**

35 yrs ago babies are born here hospital celebrated the births of the last baby of feb 20th and the 1st baby of feb 21st w/gifts. 5 mothers including mrs keating were in labor as of midnight find the full name of each newborn 1 of the 1st name is crystal can you figure the ...
*February 21, 2008 by latisha*

**check math**

If boys ad girls are equally likely to be born, what is the probability that in a randomly selected family of eight children, there will be at least one a boy. Answer 0.984
*June 1, 2013 by Sue*

**statistics**

Define each of the following probability terms for the scenario of determining the probability that when a couple has 3 children, they will have exactly 2 boys. Assume that boys and girls are equally likely and that the gender of any child is not influenced by the gender of ...
*September 6, 2014 by thankyou*

**Science**

Two parents have three children. They have two girls and one boy. What is the probability that the next child will be a boy?
*April 8, 2013 by Bobby*

**math**

You meet a woman who tells you. "I have two children. One of them is a boy." What is the probability that both children are boys?
*March 29, 2011 by Jamie*

**Finite math**

A newly married couple decides to keep having children until they have a girl. What is the probability that the couple will have at least 5 children?
*May 3, 2012 by MV*

**biology**

A couple has four children. What is the probability that there will be 2 boys and 2 girls? Assume that no outside forces influence the births.
*November 19, 2008 by katt0109*

**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*

**statistics**

If boys and girls are equally likely to be born, what is the probability that in a randomly selected family of 6 children, there will be at least one boy? (Find the answer using a formula. Round your answer to three decimal places.)
*March 30, 2014 by jose*

**Math**

In a family with two children, what are the probabilities of the following outcomes, assuming that the birth of boys and girls is equally likely? a. Both are boys. b. The first is a girl and the second a boy. c. Neither is a girl. d. At least one is a girl. I was wondering ...
*November 18, 2009 by Punkie*

**Math**

If boys and girls are equally likely to be born, what is the probability that in a randomly selected family of 8 children, there will be at least one boy? (Find the answer using a formula. Give your answer correct to three decimal places.)
*June 6, 2013 by Nora 59*

**Biology**

In man, muscular dustrophy , is inherited as a sex linked recessive , a couple , both of whom are normal, have five children, three boys and two girls , the oldest boy is beginning to show symptoms of the disease, what could you tell them about the chances of their children ...
*October 26, 2011 by Melissa*

**Math**

I am doing an assignment on probability. It sais.. "By the start of the 21st century, only 1 in 6 babies in America was born with blue eyes. What is the probability that at least 1 out of 2 babies has blue eyes? And then it sais " What might be a good model for simulating the ...
*June 1, 2013 by Kortny*

**science**

A normal man and a heterozygous color blind "carrier" woman have a baby. If they have a girl, what is the probability that the girl will be colorblind. If they have a boy, what is the probability that the boy will be colorblind?
*December 18, 2012 by kelly*

**mathematics**

Consider the composition of a three-child family. Assume that a girl is as likely as a boy at each birth. What is the probability that there is one boy and two girls in the family?
*February 20, 2011 by Anonymous*

**math**

Chances are 50-50 that a newborn baby will be a girl. For families with five children, what is the probability that all the children are girls
*November 24, 2012 by joe*

**math**

A couple plans to invest money for the chld's education. What principle must the couple deposit when their child is born so that when she turns 18 she will have $50,000. Assume the money earns 6% compounded monthly.
*January 13, 2010 by yusuf*

**math**

Assuming boy and girl babies are equally likely, find the probability that a family with three children will have exactly 1 boy
*November 3, 2013 by Jazmine*

**Math: Is my answer correct?**

I am not sure how to do this, just guesssing. A couple has a 2/3 probability of passing on brown eyes to their children. If they have four children, what is the probability that none of the children will have brown eyes? A) 8/27 B) 1/27 C) 1/81 D) 16/81 Would I multiply 2/3^4 ...
*May 2, 2010 by bwb*

**sat math**

At a certain hospital, 89 children were born in the month of June. If more children were born on the fifteenth of June than on any other day in June, what is the least number of children that could have been born on the fifteenth of June? The number of days is not given, is it...
*July 30, 2012 by skye*

**French**

Does anyone know a list of baby animals in French, or know specifically what these are? ~baby bunny ~baby "Sanglier" ~baby "vache" ~baby turkey ~baby "Cane" ~baby cerf ~baby "jars" ~baby "jument" Merci for your help
*December 22, 2008 by Noelle*

**Statistics**

A couple with eight daughters decides to have one more baby, because they think this time they are sure to have boy! Is this reasoning accurate?
*February 13, 2014 by Anonymous*

**science**

Mice are famous for their ability to multiply at break make speed the type of mouse we have here gives birth once a month. Birthing 12 babies each time, baby mice mature and can give birth two months after they are born, you picked up one of these darling baby mice at the pet ...
*April 1, 2009 by Daniela*

**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*

**Mathematics**

In a family of two children, find the probability that the family has two boys given that the first child is a boy.
*August 23, 2013 by Rahul*

**maths**

In a family of two children, find the probability that the family has two boys given that the first child is a boy.
*September 29, 2013 by partha*

**stats.**

Based on data from the National Center for Health Statistics, N. Wetzel used the normal distribution to model the length of gestation for pregnant US woman ( Chance, Spring 2001). Gestation length has mean of 280 days with a standard deviation of 20 days. a. Find the ...
*March 17, 2013 by Lindsey please help*

**statistics**

Based on data from the National Center for Health Statistics, N. Wetzel used the normal distribution to model the length of gestation for pregnant US woman ( Chance, Spring 2001). Gestation length has mean of 280 days with a standard deviation of 20 days. a. Find the ...
*March 17, 2013 by lindsey*

**Data Management**

a couple is planning to have seven children. what is the probability that at least 3 of the children will have a birthday in the same month
*January 22, 2014 by Anon*

**college math**

A couple plan to have exactly three children. (a) Construct a tree diagram and list the sample space. (b) Find the probability that the family has at least two girls.
*December 11, 2007 by Rose*

**biology Please Help**

The probability that their baby will be a carrier of the gene for PKU is (A) __________. 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) _________. my ...
*June 1, 2014 by Stacy*

**math**

A couple has 4 children ages 9,6,4,and 1.What is the probability that they are all girls.
*January 25, 2012 by Amina*

**Math - Algebra**

A father in his will left all his money to his children in the following manner: $1000 to the first born and 1/10 of what then remains, then $2000 to the second born and 1/10 of what remains, then $3000 to the third born and 1/10 of what remains, and so on. When this was done...
*November 28, 2007 by Anonymous*

**Math**

In the United States, more male babies are born than female. In 2004, 2,104,661 males were born and 2,007,391 females were born. Determine the empirical probability of an individual being born a) male. b) female.
*July 19, 2011 by Jen*

**Physics**

Two boys standing on carts that move along a horizontal frictionless surface. The mass of each boy-cart combination is 100 kg, and each moves initially with the velocities of: Boy A 7cm/sec and Boy B: 10cm/sec. The boy on cart A throws a 2kg ball to the boy on Cart B (assume ...
*April 11, 2013 by Danisha*

**algebra 11**

At Joseph Middle School, the probability that a boy takes English and Science is 0.087. The probability that a boy takes English is 0.68. What is the probability that a boy takes Science given that the boy is taking English?
*March 22, 2012 by Shad*

**Math**

Hi can someone help assist me with my math problems dealing with probability If 80% of scheduled flights actually take place and cancellations are independent events, what is the probability that 3 separate flights will all take place? A) 0.51 B) 0.01 C) 0.64 D) 0.80 ...
*April 2, 2010 by Hannah*

**7th grade science**

Write a pedigree in which there are parents and 4 children, 1 girl and 1 boy are color blind and the other girl and boy are not. I HAVE A FEW QUESTIONS- ?- For a girl to be colorblind does her mother have to be colorblind too or just a carrier?her father? ?- If two people are ...
*January 4, 2010 by kendall*

**Math**

If 3 people are asked what day of the week they were born, find the probability that i) 2 or 3 are the same. ii) only 2 people are the same. - is this 1/7 x 1/7 ?? If 4 people are asked what day of the week they were born, what is the probability that 2 or more people were ...
*February 22, 2010 by Maria*

**math**

if 34 baby boys were born in a week and that was 54% how many girls were born in that week
*March 27, 2012 by summer*

**child psychology**

Typically when paired with a boy in a laboratory play session, a two year old girl is likely to A. stand idly while the boy explores the toy B.assume domineering behavior, telling him what to do C.actively explore the surroundings D.play cooperatively with the boy I think its ...
*March 26, 2012 by sarah*

**probability**

For a family with 2 children, the sample space indicating boy (B) or girl (G) is BB, BG, GB, and GG. If each of the outcomes is equally likely, find the probability that the family has 2 girls, given that the first child is a girl.
*July 6, 2013 by sarah*

**statistics**

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

**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*

**Biology**

You are studying a large population of claims of which 396 are pink (t) and 557 are Tan (T). Tan clams are completely dominant over pink clams. Calculate the following: 1. The frequencies of each allele. 2. The expected genotypic frequencies. 3. The number of heterozygous ...
*February 7, 2013 by Josh *

**Math 132**

There are 7 girls and 6 boys in a class. Suppose five children are randomly chosen to decorate the game room. Given that at least one boy is chosen, what is the probability that exactly two boys are chosen?
*April 5, 2010 by Jess*

**Biology**

If a husband and wife have a 50% chance of having a child with autism (50% of their children should be born with it). In reality, would this 50% ratio be more closely approached if they had FEW children or MANY children?
*October 10, 2007 by Jackie*

**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*

**Math 157**

assume that a reseacher randomly selected 14 new born babies and counts the number of girls selected x. the probability corresponding to the 14 possible values of x. find the probability of selecting exactly 8 girls.
*March 12, 2011 by Anonymous*

**Statistics **

1. A human gene carries a certain disease from a mother to her child with a probability rate of 0.58. That is, there is a 58% chance that the child becomes infected with the disease. Suppose a female carrier of the gene has five children. Assume that the infections, or lack ...
*September 29, 2013 by Lisa *

**math**

A toy manufacturer is introducin g two new dolls, my first baby and my real baby. IN one hour, the company can produce 8 first baby dolls and 20 real baby dolls. Because of demand, the company produces at least twice as many first babies as real babies. The company spends no ...
*August 29, 2010 by Haley*

**babies born inthe white house[first]**

Who was the first baby born to a president's wife in the White house? Ester Cleveland, daughter of Grover, in his second term. I don't know
*January 11, 2007 by Holly*

**english**

1. You will be taller than her in a couple of years. (What is the part of speech of 'than' here? Is 'in a couple of years' 'two years' or 'two, three, or four years'?) English - Ms. Sue, Wednesday, June 2, 2010 at 5:50pm "Than" is used as a conjunction. A couple of years ...
*June 2, 2010 by rfvv*

**Literature**

i've read the story "Everything Stuck To Him" and in the beggining there is a couple and the girl wants to know about when she was a kid. the boy tells her a whole story about when she was a baby and what went on between her parents. my question says which phrase best ...
*February 5, 2009 by Bella*

**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**

If a couple has 4 children and none are from multiple births or twins. With the probability of sons being 50% how many sons would they expect to have?
*July 4, 2014 by Denise*

**Genetics**

Phenylketonuria, a Metabolic disease in humans, is caused by a recessive allele, k. If two heterozygotes marry and plan a family of six children: a)what is the probability that all will be unaffected? b)what is the probability that three will be unaffected and three will be ...
*September 2, 2011 by Tommy*

**Math/157**

A human gene carries a certain disease from the mother to the child with a probability rate of 53%. That is, there is a 53% chance that the child becomes infected with the disease. Suppose a female carrier of the gene has three children. Assume that the infections of the three...
*March 20, 2010 by anony*

**Pre Algebra**

I have work problem that I am unable to solve. Each hour Maggie baby sits she charges $2 plus .75 for each child. Write an equation for Maggie's hourly rate h in terms of the number of children c. Solve the equation to find the hourly rate when Maggie baby sits 3 children.
*November 7, 2011 by Jared*

**math**

A couple plans to save for their child’s college education. What principal must be deposited by the parents when their child is born in order to have $100,000 when the child reaches age 18? Assume the money earns 4% interest, compounded quarterly.
*November 15, 2013 by denise*

**Biology**

GENETICS PRACTICE PROBLEMS Worth 10 points each problem is either right or wrong 1. In humans, assume that brown eyes (B) are dominant over blue eyes (b). A blue eyed man, both of whose parents were brown eyed, marries a brown eyed woman whose father was brown eyed and whose ...
*April 16, 2012 by Vicky*

**Statistics**

Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gender of any other children. Find the probability of exactly eight in ten births.
*March 13, 2011 by chalulu*

**Statistics**

A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study, 449 babies were born, and 250 of them were girls. Use the sample data with .01 significance level to test the claim that with this method, the probability of a baby being a...
*November 26, 2013 by Help Please! *

**math**

I feel as though I am missing something here...Suppose a family wants to have 3 children. Find the probability that the family has at least 1 boy. Help?
*March 13, 2012 by Emily*

**math**

I feel as though I am missing something here...Suppose a family wants to have 3 children. Find the probability that the family has at least 1 boy. Help?
*March 13, 2012 by Emily*

**statistics**

the weights of newborn babies are distributed normally, with the mean of approximately 115 oz and a standard deviation of 20 oz. if a newborn baby is selected at random. what is the probability that the baby weighs more than 95 oz?
*September 18, 2014 by michelle*

**statistics**

the wieights of newborn babies are distributed normally, with the mean of approximately 115 oz and a standard deviation of 20 oz. if a newborn baby is selected at random. what is the probability that the baby weighs more than 95 oz?
*September 18, 2014 by michelle*

**Physics/Calculus**

At a county fair, a boy and two friends bring their teddy bears on the giant Ferris wheel. The wheel has a diameter of 14.8 m, the bottom of the wheel is 1.8 m above the ground and its rim is moving at a speed of 1.0 m/s. The boys are seated in positions 45° from each other. ...
*October 14, 2010 by Donny*

**Maths**

- In a normal pack of cards, write down the odds against picking each card. a) a diamond b) a jack c) a red 10 d) a black picture card e) a picture card 1. A die is rolled 3 times. Estimate the chance of 2 or 3 no.'s being the same. Find the probability that i) the three nos ...
*February 19, 2010 by Kesha*

**english**

from an article " baby mix-up" and in the below sentence "Carolyn Savage won't have another chance to carry her own baby because of her age and difficulties during her earlier pregnancies. She and her husband plan to hire a surrogate and try again for a fourth child". a fourth...
*September 24, 2009 by hahee*

**math**

If two people are selected at random, what is the probability that they were both born in May?
*June 9, 2011 by CC*

**Physics (help steve)**

A boy is spinning on a chair and holding a paper bag so that it is horizontal, and perpendicular to the axis of the rotation. What should be the angular velocity of the boy in radians/second so that the bottom of the bag breaks? Details and assumptions Assume paper breaks at ...
*July 8, 2013 by Mark*

**Physics (help steve)**

A boy is spinning on a chair and holding a paper bag so that it is horizontal, and perpendicular to the axis of the rotation. What should be the angular velocity of the boy in radians/second so that the bottom of the bag breaks? Details and assumptions Assume paper breaks at ...
*July 9, 2013 by Kay*

**SCIENCE,PHYSICS**

A boy is spinning on a chair and holding a paper bag so that it is horizontal, and perpendicular to the axis of the rotation. What should be the angular velocity of the boy in radians/second so that the bottom of the bag breaks? Details and assumptions Assume paper breaks at ...
*July 10, 2013 by GT*

**tough physics**

A boy is spinning on a chair and holding a paper bag so that it is horizontal, and perpendicular to the axis of the rotation. What should be the angular velocity of the boy in radians/second so that the bottom of the bag breaks? Details and assumptions Assume paper breaks at ...
*July 14, 2013 by Steve*

**English**

I am still confused about the use of 'a couple of' For example, if a person says, 'I have a couple of pens,' does it mean he has two pens or he has two, three, or four pens? I know in a colloquial expression, 'a couple of' means two, three or four? Am I right?
*November 20, 2009 by rfvv*

**math**

Below is a sample space for a family with 3 children. BGG stands for the oldest child being a boy, the middle child a girl, and the youngest a girl. Use the sample space to answer the question:What is the probability (in simplest form) that the middle child is a boy? _____ ...
*April 5, 2012 by Cheril*

**genetics-PLEASE HELP**

Two parents who are each known to be carriers of an autosomal recessive allele have four children. None of the children has the recessive condition. What is the probability that three or more of the children are the carriers of the recessive allele?
*October 6, 2013 by jen *

**math**

If two people are selected at random, what is the probability that they were both born in winter (December, January, or February)?
*June 9, 2011 by CC*

**Physics**

At a county fair, a boy and two friends bring their teddy bears on the giant Ferris wheel. The wheel has a diameter of 14.0 m, the bottom of the wheel is 1.9 m above the ground and its rim is moving at a speed of 1.0 m/s. The boys are seated in positions 45° from each other. ...
*October 14, 2010 by Gina*

**Physics**

At a county fair, a boy and two friends bring their teddy bears on the giant Ferris wheel. The wheel has a diameter of 14.3 m, the bottom of the wheel is 1.9 m above the ground and its rim is moving at a speed of 1.0 m/s. The boys are seated in positions 45° from each other. ...
*October 27, 2011 by Jean*

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