A ruler to measure the length of an object.
Yes because i took this in economics class
Answer:
The answer is 60.11
Step-by-step explanation:
An adult person receives 425 pieces of mail each year with a standard deviation of 50.
Now, we have the following details :
Mean of sample = 425
sigma = 50
Standard error = 
=
= 60.11
Positive if I looked at graph correctly
I believe it’s B.) sorry if I’m wrong!!!!