SOLUTION: In the probability distribution below, x represents the number of girls in a family of four children. 1) write the sample space for a family of four children, and 2)USE THAT to fil

Question 1070633: In the probability distribution below, x represents the number of girls in a family of four children. 1) write the sample space for a family of four children, and 2)USE THAT to fill in the probabilities in the table. Then 3) find the mean and standard deviation. 4) Is it unusual for a family of four children to consist of four girls? X=# of girls
X|P(x)
0
1
2
3
4
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Look at the 16 possible outcomes of boys and girls,
.
.
.

.
.
.
.
So then,
0,1
1,4
2,6
3,4
4,1
.
.
.
Make a chart in EXCEL to calculate the mean and standard deviation.
.
.
.

.
.
.
.

.
.
So a family of 4 girls, would be 2 standard deviations away from the mean.
Technically right on the border line of being unusual so it could go either way.

RELATED QUESTIONS
The random variable x represents the number of boys in a family of three children.... (answered by stanbon)

Construct the probability distribution of H representing the number of girls in a family... (answered by Boreal)

Finding the mean and standard deviation. Let the random variable x represent the number... (answered by Fombitz)

Let the random variable x represent the number of girls in a family with three children.... (answered by robertb)

1.Determine the probability distribution for the number of girls in a family with 4... (answered by Fombitz)

the sex distribution being equally probable, compute the expected number of girls in a... (answered by stanbon)

In a certain country, the probability that a baby that is born is a boy is 0.52 and the... (answered by Boreal)

in a family of six children, what is the probability of having at least three... (answered by stanbon)

Finding Mean and Standard Deviation: Let the random variable X represent the number of (answered by stanbon)