Which of the following accurately describes the null and alternative hypotheses for a Kruskal-Wallis test?
1)
Ho: The populations' medians are the same,
Ha: At least one population median is different
2)
Ho: The population distributions are the same,
Ha: At least one distribution is different
3)
Ho: At least one population distribution is the same,
Ha: All distributions are different
4)
Ho: All population means are equal,
Ha: At least one population mean is different