Question 1119283
<pre>
Note to get the E in -1E99 or 1E99 on your TI-83 or 84, 
press 2ND, COMMA key between the x² key and the "(" key. 
</pre>
Find the area under the standard normal curve which lies 
(a) to the left of 0.47 
<pre>
On your TI-83 or 84 press 2ND VARS

lower:-1E99
upper:0.47
<font face="symbol">m</font>:0
<font face="symbol">s</font>:1
Paste

Highlight Paste, Press ENTER, see this:

normalcdf(-1E99,0.47,0,1)

or if you calculator does not have the above wizard, 
and you only see normalcdf(, then make it read this 
way

normalcdf(-1E99,0.47,0,1)

Press ENTER.

Read the answer as 0.6808224814

</pre>
b)	to the right of z = -0.06 
<pre>
On your TI-83 or 84 press 2ND VARS

lower:-0.06
upper:1E99
<font face="symbol">m</font>:0
<font face="symbol">s</font>:1
Paste

Highlight Paste, Press ENTER, see this:

normalcdf(-0.06,1E99,0,1)

or if you calculator does not have the above wizard, 
and you only see normalcdf(, then make it read this 
way

normalcdf(-0.06,1E99,0,1)

Press ENTER.
</pre>
( c) to the right of z = 2.53 
<pre>
On your TI-83 or 84 press 2ND VARS

lower:2.53
upper:1E99
<font face="symbol">m</font>:0
<font face="symbol">s</font>:1
Paste

Highlight Paste, Press ENTER, see this:

normalcdf(2.53,1E99,0,1)

or if you calculator does not have the above wizard, 
and you only see normalcdf(, then make it read this 
way

normalcdf(2.53,1E99,0,1)

Press ENTER.
</pre>
(d) to the left of z = -1.31 
<pre>
On your TI-83 or 84 press 2ND VARS

lower:-1E99
upper:-1.31
<font face="symbol">m</font>:0
<font face="symbol">s</font>:1
Paste

Highlight Paste, Press ENTER, see this:

normalcdf(-1E99,-1.31,0,1)

or if you calculator does not have the above wizard, 
and you only see normalcdf(, then make it read this 
way

normalcdf(-1E99,1.31,0,1)

Press ENTER.
</pre>
(e) between z = 0.72 and z = 1.59 
<pre>
On your TI-83 or 84 press 2ND VARS

lower:0.72
upper:1.59
<font face="symbol">m</font>:0
<font face="symbol">s</font>:1
Paste

Highlight Paste, Press ENTER, see this:

normalcdf(0.72,1.59,0,1)

or if you calculator does not have the above wizard, 
and you only see normalcdf(, then make it read this 
way

normalcdf(0.72,1.59,0,1)

Press ENTER.
</pre>
(f) between z = -0.11 and z = 2.48 
<pre>
On your TI-83 or 84 press 2ND VARS

lower:-0.11
upper:2.48
<font face="symbol">m</font>:0
<font face="symbol">s</font>:1
Paste

Highlight Paste, Press ENTER, see this:

normalcdf(-0.11,2.48,0,1)

or if you calculator does not have the above wizard, 
and you only see normalcdf(, then make it read this 
way

normalcdf(-0.11,2.48,0,1)

Press ENTER.

Edwin</pre>