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3 years ago

What is the expected number of female children in a family with three children?

Mathematics

2 answers:

Basile [38]3 years ago

4 0

Answer:

Option B is the correct answer.

Step-by-step explanation:

Expected value of female children= Probability of female children x Total number of children.

A child can be male or female, so there are 2 combinations, favorable outcome is female.

Probability of female children $=\frac{1}{2}$

Expected value of female children $=\frac{1}{2}\times 3=1.5$

Option B is the correct answer.

Paladinen [302]3 years ago

3 0

The answer is 1.5 females, one way to solve this is to multiply the probability of a female (50%) with the number of girls in total = 3 multiplied by (50%) = 1.5.

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siniylev [52]

Solution :

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$C(x,y) = e^{-(x^2+2y^2)/10^4}$

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Then we know the shark's path is perpendicular to the level curves it intersects.

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