Question: whats wrong with this experiment identify the most critical flaw...
What’s Wrong with This Experiment? Identify the most critical flaw in the experiments described below
and explain how it could be fixed.
1). 100 smokers who wanted to quit smoking were randomly assigned to two groups. One group was
given nicotine gum to chew whenever they felt the urge to smoke. The other group was given nothing.
After four weeks the groups were compared on the percentage of people who had been successful at
2). An educational researcher asks students in a college US history class whether or not they used the
textbook study guide in preparing for an exam. He then compares the grades of those who did to those
who did not.