For each research project listed here, identify the variables and classify them in terms of level of measurement, and whether they are discrete or continuous. Is each variable independent or dependent? a. For a research project in a political science course, a student collected information for 50 nations. She used infant mortality rates as a measure of quality of life and the percentage of all adults who are permitted to vote as a measure of democratization. Her hypothesis was that quality of life is higher in more democratic nations