title: Error in qnorm: argument "p" is missing, with no default
body: <p>I'm trying to use R to calculate using a "perfect" normal distribution. In other words, I don't want to specify it from some sample points - I have none - I just want to feed it the mean and standard deviation and compute quantiles.</p>
  
  <p>It seems I should use <code>qnorm</code> and I would assume to call it like <code>qnorm(mean=1000, sd=50</code>, but it complains <code>argument "p" is missing, with no default</code>. <code>p</code> looks to be the sample data but that really should be irrelevant if I know the mean and sd. If I omit the parameters entirely it actually works fine, but if I enter these two parameters it seems to expect <code>p</code>. What gives?</p>
  
  <p>Here is a minimal, complete, verifiable example:</p>
  
  <pre><code>&gt; qnorm(mean=1000, sd=50)
  Error in qnorm(mean = 1000, sd = 50) : 
    argument "p" is missing, with no default
  </code></pre>
  
  <p>Here is my concise problem statement:</p>
  
  <p>"When using the <code>qnorm</code> function what must I supply for the variable <code>p</code>?"</p>
  
  <p>Here is the desired behavior:</p>
  
  <pre><code>qnorm(mean=1000, sd=50)(.095)
  &gt; the answer!!!!!!
  </code></pre>