To test the null hypothesis that states there is no statistically significant difference among the top three technologies measured by capacity, we'll use ANOVA (Analysis of Variance). This statistical test is used when comparing the means of three or more groups. If the p-value from the ANOVA test is less than our significance level (usually 0.05), we reject the null hypothesis, indicating a significant difference exists among the groups.
After conducting the ANOVA test, if we find significant differences, we can perform a post-hoc test, such as Tukey's HSD, to determine which specific groups differ from each other.