50 pts, give this lazy bum an easy 100 Analyze the following scenario in order to identify the important parts of an experiment

Josh wanted to find out if smokers could taste foods as well as non-smokers. Josh baked two dozen lemon cookies with one teaspoon of lemon extract, two dozen lemon cookies with ¼ teaspoon of lemon extract. He used one dozen of each concentration to test 12 smokers to determine if they could detect the difference in lemon flavoring. He did the same exact thing with 12 non-smokers. Each participant received one of each type of cookie.