The following sample data have been collected from two independent samples from two populations. Test the claim that the second population median will exceed the median of the first population.

a. State the appropriate null and alternative hypotheses.
b. If you are unwilling to assume that the two populations are normally distributed, based on the sample data, what should you conclude about the null hypothesis? Test using α = 0.05.

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Sample I Sample 2 21 15 10 18 16 17 12 19