One method for assessing the effectiveness of a drug is to note its concentration in blood and/or urine samples at certain periods of time after giving the drug. Suppose we wish to compare two types of aspirin in regard to their concentration in urine specimens taken one hour after taking the drug within the same person. What is the appropriate statistical test in this context?
A. Construct confidence interval(s)
B. More than two independent samples F test (ANOVA)
C. Two independent samples t test
D. One sample Z or t test
E. Use regression to test the effect of an independent variable on a dependent variable
E. Use a chi-squared test
F. Paired Samples t test