Assume we found a 98% confidence interval for the true difference in proportions of those who consume caffeine and smoke, and those who don’t consume caffeine and smoke to be [-0.78, 0.09]. Which of the following would be an appropriate interpretation? We are 98% confident that the true difference in the proportions of those who consume caffeine and smoke, and those who don't consume caffeine and smoke is between -0.78 and 0.09.   We are 98% confident that the true proportions of those who consume caffeine and smoke, and those who don't consume caffeine and smoke is between -0.78 and 0.09.    We are 98% confident that the difference in the proportions of those who consume caffeine and smoke, and those who don't consume caffeine and smoke is between -0.78 and 0.09.    We are 98% confident that the true difference in the averages of those who consume caffeine and smoke, and those who don't consume caffeine and smoke is between -0.78 and 0.09.

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