Question 1135856
<pre>
lower = -0.73, upper = 2.27, <font face="symbol">m</font> = 0, <font face="symbol">s</font> = 1

On your TI-83 or TI-84, 2ND VARS select normalcdf(

normalcdf(-0.73,2.27,0,1)

press ENTER

0.7557012257

Edwin</pre>