Multiple Choice
In order to test the effectiveness of a drug called XZR designed to reduce cholesterol levels,9 heart patients' cholesterol levels are measured before they are given the drug.The same 9 patients use XZR for two continuous months.After two months of continuous use,the 9 patients' cholesterol levels are measured again.The comparison of cholesterol levels before versus after the administration of the drug is an example of testing the difference between two ____________.
A) Samples of equal variances
B) Independent samples
C) Paired samples
D) Samples of unequal variances
Correct Answer:
Verified
Correct Answer:
Verified
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