SOLUTION: Finding Mean and Standard Deviation:
Let the random variable X represent the number of girls in a family of four children. Construct a table describing the probability distribu
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-> SOLUTION: Finding Mean and Standard Deviation:
Let the random variable X represent the number of girls in a family of four children. Construct a table describing the probability distribu
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Question 562997: Finding Mean and Standard Deviation:
Let the random variable X represent the number of girls in a family of four children. Construct a table describing the probability distribution, them find the mean and standard deviation.
Could you help me with this problem please?
Thanks Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Finding Mean and Standard Deviation:
Let the random variable X represent the number of girls in a family of four children. Construct a table describing the probability distribution, them find the mean and standard deviation.
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0 girls: 1/16
1 girl : 4/16
2 girls: 6/16
3 girls: 4/16
4 girls: 1/16
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mean = np = 4*(1/2) = 2
std = sqrt(npq) = sqrt(4(1/2)(1/2)) = 1
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Cheers,
Stan H.
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