Final answer:
To determine the percentage of customers who are more likely to spend more if the sales associate is helpful, market research needs to be conducted by surveying a sample of customers and asking them about their shopping experiences and the influence of sales associates.
Step-by-step explanation:
To determine the percentage of customers who are more likely to spend more if the sales associate is helpful, market research needs to be conducted. This involves surveying a sample of customers and asking them about their shopping experiences and the influence of sales associates.
The percentage can then be calculated by dividing the number of customers who reported spending more due to helpful sales associates by the total number of respondents.