By calling every 100th person listed in the phone book and asking if they are willing to participate in the study, researchers can ensure the experimental group is random. Once 100 participants agree to partake in the study, half of the subjects would be assigned to take vitamins. The other half of the group would take a placebo vitamin and represent the controlled group. Neither groups will know which supplement they received as a way to determine if the independent variable; vitamins, causes crime. The study would be conducted for two days with the same participants. At the end of each day, the results of crime reported would be analyzed and compared to the people taking vitamins. If there is a correlation between vitamin consumption and crime from the past two days, meaning crime increased on both days, researchers can conclude that the hypothesis is
By calling every 100th person listed in the phone book and asking if they are willing to participate in the study, researchers can ensure the experimental group is random. Once 100 participants agree to partake in the study, half of the subjects would be assigned to take vitamins. The other half of the group would take a placebo vitamin and represent the controlled group. Neither groups will know which supplement they received as a way to determine if the independent variable; vitamins, causes crime. The study would be conducted for two days with the same participants. At the end of each day, the results of crime reported would be analyzed and compared to the people taking vitamins. If there is a correlation between vitamin consumption and crime from the past two days, meaning crime increased on both days, researchers can conclude that the hypothesis is