Final edits

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Mark 2024-09-26 09:25:14 -07:00
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@ -88,7 +88,7 @@ Given some $y$, what is the probability that all five $\mathcal{X}_i$ are smalle
Say we have a random variable $\mathcal{X}$ which we observe $n$ times. \note{(for example, we repeatedly roll a die)}
We'll arrange these observations in increasing order, labeled $x_1 < x_2 < ... < x_n$. \par
Under this definition, $x_i$ is called the \textit{$i^\text{th}$ order statistic}---the $i^\text{th}$ smallest sample of $\mathcal{X}$.
a
\problem{}<ostatone>
Say we have a random variable $\mathcal{X}$ uniformly distributed on $[0, 1]$, of which we take $5$ observations. \par
@ -188,10 +188,6 @@ reject the first $e^{-1} \times n$ candidates, and select the next \say{best-yet
How effective is this strategy for the ranked secretary problem? \par
Find the expected rank of the applicant we select using this strategy.
\begin{solution}
Coming soon.
\end{solution}
\vfill
@ -200,7 +196,8 @@ Assuming we use the same kind of strategy as before (reject $k$, select the next
show that $k = \sqrt{n}$ optimizes the expected rank of the candidate we select.
\begin{solution}
This is a difficult bonus problem. Solution coming later.
This is a difficult bonus problem. see
\texttt{Neil Bearden, J. (2006). A new secretary problem with rank-based selection and cardinal payoffs.}
\end{solution}
\vfill