Question: 1.Tsau et al. (A-33) studied urinary epidermal growth factor (EGF) excretion in normal children and those with acute renal failure (ARF). Random urine samples followed

1.Tsau et al. (A-33) studied urinary epidermal growth factor (EGF) excretion in normal children and those with acute renal failure (ARF). Random urine samples followed by 24-hour urine collection were obtained from 25 children. Subjects ranged in age from 1 month to 15 years. Urinary EGF excretion was expressed as a ratio of urinary EGF to urinary creatinine concentration (EGF/Cr). The authors conclude from their research results that it is reasonable to use random urine tests for monitoring EGF excretion.

a.Which is the independent variable?

b.Which is the dependent variable?

c.What are the appropriate null and alternative hypotheses?

d.What is the sampled population?

e.What is the target population?

f.Construct and paste graphs/tables.

g.State the statistical decisions and clinical conclusions that the results of your hypothesis tests justify.

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