Expected Value

Sequences, counting (including probability), logic and truth tables, algorithms, number theory, set theory, etc.
theawkwardcellist
Posts: 2
Joined: Wed Jun 13, 2012 11:12 pm
Contact:

Expected Value

Postby theawkwardcellist » Wed Jun 13, 2012 11:40 pm

1. If the probability of a boy's being born is 1/3, and a family plans to have 6 children, what is the expected number of boys?
(A)1
(B)2
(C)3
(D)5
(E)6

User avatar
maggiemagnet
Posts: 310
Joined: Mon Dec 08, 2008 12:32 am
Contact:

Re: Expected Value

Postby maggiemagnet » Thu Jun 14, 2012 5:35 pm

theawkwardcellist wrote:1. If the probability of a boy's being born is 1/3, and a family plans to have 6 children, what is the expected number of boys?

What did you get when you multiplied?
:clap:


Return to “Discrete Math”