The ANOVA Test Performed for Determined That Not All Mean

Multiple Choice

The ANOVA test performed for determined that not all mean commute times across the four cities are equal. However, it did not indicate which means differed. To find out which population means differ requires further analysis of the direction and the statistical significance of the difference between paired population means. Tukey's 95% confidence intervals are shown below. The conclusion of the Tukey confidence intervals is ________.

A) the mean commute time in Houston is different from the mean commute time in Charlotte, Tucson, and Akron
B) the mean commute time in Charlotte is different from the mean commute time in Houston, Tucson, and Akron
C) the mean commute time in Tucson is different from the mean commute time in Houston, Charlotte, and Akron
D) the mean commute time in Akron is different from the mean time in Houston, Charlotte, and Tucson