Sample size (or number of clusters) by treatment arms
50,000 participants are initially randomized, but we expect only a response rate of 60%. Each participant will see 15 product carts split in the following way:
1. Information about environmental activities of the firm: 1.3333 carts * 50,000 people * 60% response rate = 40,000 carts
2. Information about social activities of the firm: 1.3333 carts * 50,000 people * 60% response rate = 40,000 carts
3. Information about governance activities of the firm: 1.3333 carts * 50,000 people * 60% response rate= 40,000 carts
4. ESG Report of the firm: 1 products * 50,000 people * 60% response rate = 30,000 carts
5. Annual Report of the firm: 1 products * 50,000 people * 60% response rate= 30,000 carts
6. Earnings announcement of the firm: 3 products * 50,000 people * 60% response rate= 90,000 carts
7. Target product rating: 2 products * 50,000 people * 60% response rate= 60,000 carts
8. Baseline (no additional information): 4 products * 50,000 people * 60% response rate = 120,000 carts