Final answer:
The percentage of people uncertain about payment methods upon entering a store requires a targeted survey to determine. The prompts provided do not give a direct answer, but they suggest that polling and observational studies could uncover related shopping behaviors and preferences, including payment methods.
Step-by-step explanation:
To determine the percentage of people who walk into a store without knowing their method of payment, one would ideally conduct a survey targeting a representative sample of the store's customers. This survey would ask directly about their payment method decision process upon entering the store.
However, without existing data specifically about payment method indecision, we cannot provide an exact percentage. To gather such data, the store could either ask customers directly as they check out or conduct an observational study to gather insights indirectly through customer behavior and interactions.
For instance, using information from the prompt that notes a recent poll about credit card usage, it does not directly answer the question but suggests that understanding customer payment behaviors can be obtained through polling.
Similarly, collecting data on shopping frequency or the amount spent, as mentioned, could indirectly inform a store on the shopping habits of their customers, which might include payment preferences.