Final answer:
Alicia should run a sales by customer report to identify which customers generated the most sales last month, ensuring the data's accuracy before making business decisions.
Step-by-step explanation:
To find out which customers generated the most sales last month, Alicia should run a sales by customer report from her business’s accounting or customer relationship management (CRM) system. This report will list all customers along with the total sales each one has generated for a specified time period – in this case, the previous month. This data is crucial for identifying top-performing customers and understanding customer contribution to the business's revenue. When reviewing the report, it’s crucial to ensure the accuracy of the data, similar to how a supervisor might ask for a review if some numbers seem a bit off. For a hypothetical business scenario like Video to Go, if they expect 300 customers next week, they would multiply the expected number of DVDs rented per customer by 300 to predict the total rentals.