I conducted field study regarding green consumption.

I manipulated 3 types of eco friendly messages and each type of messages was exposed to the restaurant visitors for each week.

So I got the total number of visitors and the total amount of waste for each week.

However, I don't know who visisted the restaurant and how much waste each visitor threw away.

I only got the average amount of waste per visitor.

I want to compare two types of messages were persuasive comparing to control condition.

Without observed data set, can I statistically compare the average values?

Thanks for your help!

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