A clinical nurse specialist is measuring tryptophan excretion in 24-hour urine samples in men and women on protein-restricted diets. The tryptophan values (in mg) for men are 172, 204, 229, 236, and 256. For the women, the values are 115, 135, 138, 174, 197, and 224. Is there sufficient evidence to conclude that the average amount of tryptophan excreted in a 24-hour period is the same for men and women on protein-restricted diets?
Use both parametric and nonparametric technique.