Question 1143263
<pre>

On your TI-83 or TI-84 calculator, press 2ND VARS 2

lower value = 300
upper value = 600
mean = 500
standard deviation = 100

normalcdf(300,600,500,100)  <-- calculator should show:

0.8185946784   <--answer

Round off as you were instructed.

Edwin</pre>