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