Discussion:
Q: For a store need to know: Is there a good reason to believe that on average evening customers purchase more than day customers? Perform a statistical test on the difference between the mean day purchase and the mean evening purchase (use a two-tail test).
1) Difference of means test: determines whether two samples are likely to have come from different populations.
2) Are evening customers significantly different from day customers in their buying behavior?
3) Two-tail test as the difference can go ether way.
Attachment:- Customers.rar