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When a couple has seven children, with p(boy) = p(girl) =0.500: a) what is the probability that they have all boys? b) What is the probability they have at least one boy?

Respuesta :

Given:

A couple has seven children.

n(S)=49

a)

Let A be the event that they have all boys.

[tex]P(A)=\frac{1}{49}[/tex]

b)

Let B be the event that they have atleast one boy.

[tex]P(B)=\frac{48}{49}[/tex]

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