My question that I cannot answer is:

c.) Your supervisor insists that people who buy gold are more conservative and as such people who spent an above average amount on gold in last 2 years would have more in store purchases. Justify/refute the statement using appropriate statistical tests.

So I have to answer that question based on an excel sheet where you can find the link below:

https://drive.google.com/file/d/1B-Tf7zeZrqYjtuNZA8i6hQp_CHRzQnhv/view?usp=sharing