exercise:7dc879bcfc: Difference between revisions
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(Created page with "<div class="d-none"><math> \newcommand{\NA}{{\rm NA}} \newcommand{\mat}[1]{{\bf#1}} \newcommand{\exref}[1]{\ref{##1}} \newcommand{\secstoprocess}{\all} \newcommand{\NA}{{\rm NA}} \newcommand{\mathds}{\mathbb}</math></div> A royal family has children until it has a boy or until it has three children, whichever comes first. Assume that each child is a boy with probability 1/2. Find the expected number of boys in this royal family and the expected number of girls.") |
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A royal family has children until it has a boy or until it has three children, whichever comes first. Assume that each child is a boy with | |||
has three children, whichever comes first. Assume that each child is a boy with | |||
probability 1/2. Find the expected number of boys in this royal family and the | probability 1/2. Find the expected number of boys in this royal family and the | ||
expected number of girls. | expected number of girls. | ||
Latest revision as of 10:39, 14 June 2024
A royal family has children until it has a boy or until it has three children, whichever comes first. Assume that each child is a boy with probability 1/2. Find the expected number of boys in this royal family and the expected number of girls.