n class='op'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/matrix.html'>matrix</a></span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/stats/Normal.html'>rnorm</a></span><span class='op'>(</span><span class='fl'>100</span><span class='op'>*</span><span class='fl'>1000</span>,<span class='fl'>0</span>,<span class='fl'>1</span><span class='op'>)</span>,<span class='fl'>100</span>,<span class='fl'>1000</span><span class='op'>)</span>
<span class='va'>y</span> <span class=