The Purplemath Forums

Helping students gain understanding and self-confidence in algebra.

Skip to content

Expected Value  TOPIC_SOLVED

Sequences, counting (including probability), logic and truth tables, algorithms, number theory, set theory, etc.
Post a reply

Expected Value

Postby theawkwardcellist on 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
theawkwardcellist
 
Posts: 2
Joined: Wed Jun 13, 2012 11:12 pm
Top

Sponsor

Sponsor
 
Top

Re: Expected Value  TOPIC_SOLVED

Postby maggiemagnet on 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:
User avatar
maggiemagnet
 
Posts: 294
Joined: Mon Dec 08, 2008 12:32 am
Top
Post a reply

Return to Discrete Math

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group. Color scheme by ColorizeIt!