A quality analyst wants to construct a control chart for determining whether four machines, all producing the same product, are in control with regard to a particular quality attribute. Accordingly, she inspected $1,000$ units of output from each machine in random samples, with the following results

Machine Total Defectives

#$123$

#$215$

#$329$

#$413$

What is the sample proportion of defectives for machine #$1?$

Group of answer choices

$\mathrm{.}023$

$\mathrm{.}02$

$\mathrm{.}0115$

$\mathrm{.}0058$

$\mathrm{.}005$