A company introduces a chatbot on its website to aid customer queries in Region X while Region Y continues without a chatbot. Region X: Before chatbot: monthly customer query resolution rate = 60% After chatbot: 'monthly customer query resolution rate = 75% Region Y . Before chatbot: monthly customer query resolution rate = 61% After chatbot: monthly customer query resolution rate = 62% Based on the information provided, identify: (1) Experimental group and control group (2) What is the experimental design of this research? Using the experimental design symbols to describe the design. (3) What is the experimental effect?

A company introduces a chatbot on its website to aid customer queries in Region X while Region Y continues without a chatbot. Region X: - Before chatbot: monthly customer query resolution rate =60% - After chatbot:'monthly customer query resolution rate =75% Region Y - Before chatbot: monthly customer query resolution rate =61% - After chatbot: monthly customer query resolution rate =62% Based on the information provided, identify: (1) Experimental group and control group (2) What is the experimental design of this research? Using the experimental design symbols to describe the design. (3) What is the experimental effect