An analysis of 50 train derailment incidents identified the main causes listed below, where t denotes bad track, e denotes faulty equipment, h denotes human error, and o denotes other causes (based on data from the federal railroad administration). t t t e e h h h h h o o h h h e e t t t e t h o t t t t t t t h t t h e e t t e e t t t h t t o o o construct the relative frequency distribution.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.