<PRE><B>Question 1188838</B>
&lt;pre&gt;
On your TI-84,

Press ON
Press CLEAR
Press STAT
Use right arrow key to highlight TESTS
Press 1

Make screen read

         Z-Test
Inpt:Data Stats      &lt;--(highlight Stats)
&amp;mu;&lt;sub&gt;0&lt;/sub&gt;:100
&amp;sigma;:15
x̄:112.5
n:30
&amp;mu;:≠&amp;mu;&lt;sub&gt;0&lt;/sub&gt;  &lt; &amp;mu;&lt;sub&gt;0&lt;/sub&gt;  &gt; &amp;mu;&lt;sub&gt;0&lt;/sub&gt;  &lt;-- Highlight &gt; &amp;mu;&lt;sub&gt;0&lt;/sub&gt;
Calculate  Draw     &lt;--highlight Calculate

Press ENTER

See this:
           Z-test
&amp;mu;&gt;100
z=4.564354646
p=2.507656533E-6
x̄:112.5
n:30

The p-value is extremely low p=2.507656533x10^-6 = 0.0000002507656533,
so the poem goes:

&quot;When p is low, the null hypothesis must go.&quot;

So there is not sufficient evidence to support the principal&#39;s claim.

Edwin&lt;/pre&gt;

 </PRE>