There are 12 months in a year and each year it decreases 6% so therefore each month it decreases .5%.
If you were asking the the amount it depreciates each month then you take .5% or .005 of 12000 which is 60 dollars a month.
Answer:
There is a 82% probability that th esample mean annual sales per square foot is at least $384.
Step-by-step explanation:
We have a population with mean 390 and standard deviation 45.83.
Samples of size n=49 are taken.
The parameters of the sampling distribution are:

First, we have to calculate the z-score that satisfies:

This z-score, looked up in a standard normal distribution table, is z=-0.915.
Then, we can calculate the sample mean as:

There is a 82% probability that th esample mean annual sales per square foot is at least $384.
I would say it is 32 on arc CD