Twenty students each conduct their own experiments to determine if plants that are watered with Gatorade grow at different rates than plants that are watered with water. Each student conducts their own experiment and uses the collected data to perform a 5% level hypothesis test comparing plant growth over 2 months. 11 students fail to reject the null hypothesis that plants watered with Gatorade vs water have the same average growth height, and 9 reject the null concluding that plants do grow at different rates when watered with Gatorade vs water. What might explain the different results of the students? Could anything be done to try and avoid these issues in the future?