In a hospital, $3$ of the drugs used to treat influenza were administered to $50$ patients each. The recovery times of the patients are given in the table below. What is the value of the test statistic used to test whether drugs are equally effective at a $5\%$ significance level?

$\backslash$table$[$time drug$1$ drug $2$ drug$3],[$less than $6$ days,$11,13,9],[$between $6$ and $10$ days,$32,28,27],[$more than $10$ day,$7,9,14]]$

$25,13$

$6\mathrm{.}44$

$3\mathrm{.}81$

$11\mathrm{.}52$

$4\mathrm{.}38$