Conduct a multiple comparison of means by Tukey’s method to determine exactly where the significant differences occur in Problem 34.

Data From Problem 34

Is there a relationship between a mother’s education level and how long she breastfeeds  her child? A curious researcher selects samples of mothers from three different education  levels and determines their length of breastfeeding (measured in months). Test the null hypothesis  that education level has no effect on how long a mother breastfeeds her child.

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Less Than High School 1.0 6.5 4.5 2.0 8.5 High School Graduate 1.5 4.0 3.5 1.5 5.0 College Graduate 11.0 6.5 4.5 7.5 9.0