Final answer:
Appeal A is the best. Middle-class responded better to Appeal B. Working-class responded better to Appeal A.
Step-by-step explanation:
Analysis of Appeal Letters
In order to determine which appeal letter is the best, we need to compare the response rates for Appeal A and Appeal B. From the table provided, it can be seen that Appeal A received a higher response rate of 24% compared to Appeal B's response rate of 19%. Therefore, Appeal A is the best.
To analyze which class responded better to each letter, we can compare the response rates for the working-class and middle-class neighborhoods. From the table, we can see that the working-class responded better to Appeal A with a response rate of 25% compared to the middle-class response rate of 23%. On the other hand, the middle-class responded better to Appeal B with a response rate of 20% compared to the working-class response rate of 18%. Thus, the middle-class responded better to Appeal B and the working-class responded better to Appeal A.
Based on the information provided, we cannot definitively determine whether appeal or social class is a more powerful independent variable. However, we can observe that the response rates vary based on the appeal and the social class, indicating that both factors have an impact on the fundraising success.