You run an experiment to compare responses in urine pH of eight randomly selected subjects with normal hemoglobin and eight randomly selected subjects with sickle cell anemia by measuring pH of their urine four hours after ingesting oral KC dose of .75 meg / kg total body weight. Before this KCl, no difference in urine pH is detected.

Use a nonparametric test to see the claim at alpha = 0.1 that urine pH changes to KCl dose in subjects with normal hemoglobin compared to those with sickle cell anemia.

Data is shown below in this table: