Use the data from Exercise 11.8 and find Bonferroni-corrected intervals for all three comparisons assuming an overall

Question:

Use the data from Exercise 11.8 and find Bonferroni-corrected intervals for all three comparisons assuming an overall confidence level of 95%, using 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 11.8.
In exercise
Gas Prices: Three More Cities Random samples of gasoline prices were obtained in three more cities and are shown in the table.