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
Answer:
12.5
Step-by-step explanation:i did that problem before
Is there something missing on the third option? None of the other options are wider
Answer: 9x^3 y^4 sqrt -3y