For each of the following, provide whether the confidence intervals (CI) lead to a conclusion of statistically significant difference or not? Provide your reasoning. A CI of (-0.01, 0.03) for difference in proportions of smokers vs nonsmokers with prevalent CVD. A CI of (0.2, 0.3) for difference in proportions of smokers compared to nonsmokers with prevalent disease (some disease of interest). A CI of (0.89, 1.41) for relative risk of prevalent CVD in smokers as compared to nonsmokers. A CI of (1.19, 1.41) for relative risk of prevalent disease (some disease of interest) in smokers as compared to nonsmokers. I am unclear what null value I should be comparing to (CI, difference in proportions, relative risk). Please answer and explain your reasoning behind each so I can understand. Thank you!!.