Question

Use the data from Exercise 11.7 and find Bonferroni-corrected intervals for all three comparisons assuming an overall confidence level of 95%, that is, an individual confidence level of 98.33%. Then state whether the means are significantly different based on whether the intervals capture 0 or not. Compare your conclusions with the conclusions in Exercise 11.7.
In exercise
Three Cities Random samples of gasoline prices were obtained in three cities and are shown in the table.


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  • CreatedJuly 16, 2015
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