Thursday

July 31, 2014

July 31, 2014

Posted by **Punkie** on Wednesday, November 18, 2009 at 5:32pm.

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 about the formula....

is a. P(probability) = 1/2(boy) + 1/2(boy)

P = 1/2 + 1/2

so P = 2/2

to me this doesn't seem right

- Math -
**bobpursley**, Wednesday, November 18, 2009 at 5:48pmA) PR(B,B)=Pr(b)*Pr(b)=1/2*1/2

B) Pr(g)Pr(b)=1/2*1/2

C) you can get at least one girl these ways:

gb

bg

gg

Pr(at least one g)= 1/2*1/2*3

- Math -
**Punkie**, Wednesday, November 18, 2009 at 5:50pmThank you for answering my question.

Why do you multiply the probability of both boys, girl and boy, etc?

**Related Questions**

Math - in a family with two children, what are the probabilities of the ...

Math - In a family with two children, what are the probabilities of the ...

math - in a family with two children, what are the probabilities of two boys, ...

Statistics - In planning a family of 4 children assume boys and girls are ...

statistic - The random variable x represents the number of boys in a family with...

statistics - assuming that boys and girls are equally likely, estimate the ...

check math - If boys ad girls are equally likely to be born, what is the ...

math - Suppose that China’s population policy is modified so that every family ...

odds of... - Does anyone know the odds of having Two girls as children as ...

Math - If boys and girls are equally likely to be born, what is the probability ...