A couple plans to have children until they get a girl, but they agree that they will not have more than three children even if a ll are boys. a) Create a probability model for the number of children that they will have
b) Find the expected number of children
c) Find the expected number of boys that they will have
1 answer:
Answer:
1.75,0.625
Step-by-step explanation:
Given that a couple plans to have children until they get a girl, but they agree that they will not have more than three children even if all are boys.
a) The couples can have
X I girl I boy, II girl I,II boys, III girl I,II,III boys
Pr. 0.5 0.25 0.125 0.125
b) Expected no of children
=
c)Expected number of boys
=
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