From four different excavation sites at an archeological area in New Mexico, the depths (cm) for significant archaeological discoveries were recorded. The four excavation sites are labeled I, II, III, and IV. Parts of the output from One-Way ANOVA are given below. In the output, note the p-value reported as 7.99 * 10^-7. State the null hypothesis corresponding to this p-value. Then state the conclusion that we can make from this p-value. From the \"Multiple Comparisons of Means\" part of the output, which pair(s) of sites have significantly different mean depths at level of significance alpha = 0.01 Solution.