Determine whether this is an observational or experimental study: You want to determine if cinnamon reduces a person's insulin sensitivity. You give patients who are insulin sensitive a certain amount of cinnamon and then measure their glucose levels. (hint: An observation occurs when the investigator collects data by observing, measuring, counting, watching, or asking questions. The investigator does not change anything. An experiment occurs when the investigator changes a variable or imposes a treatment to determine its effect.) int O Experimental se sample co random sam O Observational Sample colle