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Table 1 11. Regression 2 of Table 1 identified variables (including cigarettes per day) that can affect health (as measured by SF-12). Note that the p-values are inside the parentheses. Identify two variables that are statistically significant at least at the 5% level. How do you know that these variables are statistically significant? Also identify two variables that are NOT statistically significant. What is your (statistical) evidence that these two variables do not affect health outcomes in the larger population from which this random sample was drawn? (20 points)