This PR optimizes random number generation for the Studentized Range distribution.

[iraandrushko]

…rks (#4987)

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Resolves #{{TODO: add issue number}}.

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Related Issues

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Coverage Report

Package	Statements	Branches	Functions	Lines
blas/ext/base/gapxsumkbn	$\color{red}296/298$ $\color{green}+99.33\%$	$\color{red}20/21$ $\color{green}+95.24\%$	$\color{green}3/3$ $\color{green}+100.00\%$	$\color{red}296/298$ $\color{green}+99.33\%$
math/base/special/deg2radf	$\color{green}159/159$ $\color{green}+100.00\%$	$\color{green}5/5$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}159/159$ $\color{green}+100.00\%$
stats/base/dists/studentized-range/cdf	$\color{red}649/709$ $\color{green}+91.54\%$	$\color{red}68/85$ $\color{green}+80.00\%$	$\color{green}9/9$ $\color{green}+100.00\%$	$\color{red}649/709$ $\color{green}+91.54\%$
stats/base/dists/studentized-range/quantile	$\color{red}546/580$ $\color{green}+94.14\%$	$\color{red}64/80$ $\color{green}+80.00\%$	$\color{green}5/5$ $\color{green}+100.00\%$	$\color{red}546/580$ $\color{green}+94.14\%$

The above coverage report was generated for the changes in this PR.