Answer:
-0.61
Step-by-step explanation:
0.55/2=0.275
Read 0.275 from normal distribution tables
Gives -0.61
Answer:
Step-by-step explanation:

Find the center of the door.
70.33/2=35.165cm
Find the center of the towel rack
24.25/2= 12.125cm
The towel rack will be 12.125cm from the center of the door in either direction. To get the location of either end add 12.125cm or subtract 12.125cm from 35.165cm.
Note: I used decimals, this can also be done with fractions.
For convenience sake, I will let 
First, we evaluate the function at the endpoints of the interval.

Then, we need to find the critical points.
We can start by taking the derivative using the power rule.

Setting this equal to 0,

Since
, we can divide both sides by
.


So, the absolute minimum is
and the absolute minima are 