An automobile parts store was interested in comparing the mean life length of three brands of automobile brake shoes. The following data represent the life length, measured in thousands of kilometres, of random samples of six sets of brake shoes of each brand: Use the following output from statistical software to determine which of the means differ at the 0.05 level of significance.
Tukey's pairwise comparisons
Family error rate = 0.0500
Individual error rate = 0.0203
Critical value = 3.67
Intervals for (column level mean) - (row level mean)

Question

An automobile parts store was interested in comparing the mean life length of three brands of automobile brake shoes. The following data represent the life length, measured in thousands of kilometres, of random samples of six sets of brake shoes of each brand:  Use the following output from statistical software to determine which of the means differ at the 0.05 level of significance.
Tukey's pairwise comparisons
Family error rate = 0.0500
Individual error rate = 0.0203
Critical value = 3.67
Intervals for (column level mean) - (row level mean)

Quizplus · Accepted Answer

The Answer of An automobile parts store was interested in comparing the mean life length of three brands of automobile brake shoes. The following data represent the life length, measured in thousands of kilometres, of random samples of six sets of brake shoes of each brand:  Use the following output from statistical software to determine which of the means differ at the 0.05 level of significance.
Tukey's pairwise comparisons
Family error rate = 0.0500
Individual error rate = 0.0203
Critical value = 3.67
Intervals for (column level mean) - (row level mean)

An Automobile Parts Store Was Interested in Comparing the Mean