A scientist read an article in a magazine about how air pollution can cause children to develop asthma. Since the article did not come from a peer-reviewed magazine, he doubted the claim, instead believing that children living in a smog-filled city would not have an increased chance of developing asthma. He wanted to test his own idea, so he formed a hypothesis and planned out an experiment. The scientist decided to compare 10th graders from three schools in smog-filled cities to 10th graders from three schools in smog-free rural areas. He found out how many of these students had asthma and recorded his data in the table below. After looking at the results, he was amazed at what a big risk factor living in a smog-filled city was after all. b. Answer the following questions about the experiment
i. What was the scientific question for this experiment? (2 points)
ii. What hypothesis did the scientist form from the question? (2 points)
iii. What prediction could be used to test the hypothesis? (2 points)
iv. What did the control group consist of? (2 points)
v. How were the data presented? (2 points)
vi. Was the hypothesis supported or rejected by the data? Explain your answer. (2 points)
vii. Name one possible source of error or bias in this experiment. (2 points)
viii. How did the fact that the article was not peer reviewed affect the scientist? (1 point)