Quiz 1 You might need: Calculator
A couple decides to keep having children until they have a girl, at which point they will stop having
children. They also agree to having a maximum of three children. The table below shows the probability
distribution of X = the number of children such a couple would have.
X = # of children
1
2.
3
P(X)
0.5
0.25
0.25
Given that pix = 1.75 children, find the standard deviation of the children such a couple would have
Round your answer to two decimal places.