3. (2 points) Compute two-sided 95% confidence intervals for the click-through-rates (population propor- tions) of ad format A and of ad format B. Select all of the correct statements from below. (Note. Keep in mind that incorrect selections will be graded with negative points.) O The upper end of the 95% confidence interval for ad format A is smaller than the lower end of the 95% confidence interval for ad format B O The upper end of the 95% confidence interval for ad format A is larger than the lower end of the 95% confidence interval for ad format B O The upper end of the 95% confidence interval for ad format B is smaller than the lower end of the 95% confidence interval for ad format A O The upper end of the 95% confidence interval for ad format B is larger than the lower end of the 95% confidence interval for ad format A O The two confidence intervals are overlapping O The two confidence intervals are non-overlapping O By comparing the two 95% confidence intervals, one can conclude that the click-through rate generated by ad format A is higher than the click-through-rate generated by ad format B O By comparing the two 95% confidence intervals, one can conclude that the click-through rate generated by ad format A is lower than the click-through-rate generated by ad format B at 95% confidence. 95% is the largest confidence level at which the two confidence intervals are non-overlapping