summarizes the following information in a paragraph. N = 1461, Mean = 13.80, Standard Deviation = 2.94, 95% Confidence Interval = 13.80 0.15 The total number of valid responses (N) is given as 1461. The mean (average) of the highest year of school completed is given as 13.80. The standard deviation, which measures the amount of variation or dispersion of a set of values, is given as 2.94. To construct the 95% confidence interval for estimating the population mean (), we use the formula c.i. = X Z(s / N), where X is the sample mean, Z is the Z-score (which is 1.96 for a 95% confidence interval), s is the standard deviation, and N is the sample size. Therefore, we can be 95% confident that the population mean falls within the interval (13.65, 13.95)