Posted by **Claire** on Monday, March 14, 2011 at 3:00am.

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 to have children until they have a boy will have exactly 3 children? I answered this as 0.1394, Is this correct?

2. Using this model, choose the option that is closest to the probability that a couple who continue to have children until they have a boy will have more than 3 children?

3. Using this model, choose the option that is closest to the probability that, in a family with five children, the 1st, 3rd and 5th are girls, while the 2nd, and 4th are boys? I got 0.03456, is this correct?

Options given for questions 1 to 3 are: A=0.0300, B=0.1116 C=0.1202 D=0.1295 E=0.1394 F=0.3221 G= 0.5469 H=06324

any help much appriciated regards Claire

## Answer this Question

## Related Questions

- maths - Hi Can anyone help please: Suppose that the births of boys and girls can...
- maths - 1. A die labelled A has one face marked 1, one face marked 2 and the ...
- statistics - For every 100 births in the U.S., the number of boys follows, ...
- math - Assuming boy and girl babies are equally likely, find the probability ...
- math - Assuming boy and girl babies are equally likely, find the probability ...
- Math(Probability) - Let X and Y equal the outcomes when two fair six-sided dice...
- math - Atdewberry Elementary there are 5 times as many boys than girls. Let (b) ...
- statistics - Let X represent the outcome of a single roll of a fair die. Suppose...
- Math - A teacher is trying to pick 7 students to represent his class at an ...
- Maths - Question: total of 40 students in class, boys number is double of the ...

More Related Questions