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Demographics and Population Statistics

A study was conducted to compare the population mean age of women at the time of their first marriage. Independent random samples of size 11 were obtained from weddings in three different years. The resulting ANOVA test was significant at the p = 0.003 level. The sample means are given below.

If MSE = 17.68, construct the Tukey 95% confidence intervals to isolate the population mean ages that are significantly different.

Year	1985	1995	2003
Sample Mean	23.3	24.5	25.3

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