You are developing a new diet drug and get a volunteer to try it out. After a few months of taking your drug, he has lost quite a lot of weight. You conclude that the drug must work and decide to rush it to market.Although this seemed like a decent observational study at first glance, you later discover that the data you collected did not provide a full picture of the situation. This means that the conclusion you reached was flawed due to sampling error. True or False.