Question 1149728
<pre>
On TI-84,
2ND VARS 2

           normalcdf
lower:2
upper:2.5
<font face="symbol">m</font>:0
<font face="symbol">s</font>:1
Paste

scroll down to "Paste", press ENTER

Screen reads

normalcdf(2,2.5,0,1)

press ENTER

Answer: 0.0165403822, round to 0.0165

If you use a table 
Look up 2.5 read 0.4938 or 0.9938, (depending on which kind of table).
Look up 2.0 read 0.4772 or 0.9772,

Subtract and get .0166.  There is a difference in the 4th decimal place
because the calculator is more accurate than tables.

Edwin</pre>