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 two groups of people. Each person would be randomly assigned to receive one of the medications. What is the appropriate statistical test in this context?
One sample Z or t test
Two independent samples t test
Paired Samples t test
Regression
Chi-Squared test
ANOVA
Confidence Interval
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