You wake up one morning feeling slightly under the weather. A close family member enthusiastically suggests that you take some Echinacea, an herb commonly used as a cold remedy. You then decide to design an experiment  to test Echinacea and see if this claim is true. "You give 100 sick people tablets similar to Echinacea but with no herb (called a placebo), and do not tell them whether they are receiving the placebo or the Echinacea tablet, then you conduct the experiment and gather the data presented in the figure below. Given the results, you can say that ________.