A study randomly assigned 60 adults diagnosed with metabolic syndrome to two gro
ID: 3157579 • Letter: A
Question
A study randomly assigned 60 adults diagnosed with metabolic syndrome to two groups. One group was given daily tablets containing the Chinese herbal supplement Yiqi Huaju Qingli, while the other group was given daily placebo tablets. All 60 patients maintained their standard medical treatment throughout the twelve weeks of the study. Urinary microalbumin (in mg/l) was assessed for all participants at the beginning and at the end of the study. Urinary microalbumin is a key factor in metabolic syndrome and an early sign of diabetic nephropathy.
The researchers wanted to see if, by the end of the study, urinary microalbumin was significantly lower in the herbal supplement group than in the placebo group. To answer this, the researchers should use
a one-sample t test.
a matched pairs t test.
a two-sample t test.
Any of the above are valid. It just needs to be a t since is unknown.
A.a one-sample t test.
B.a matched pairs t test.
C.a two-sample t test.
D.Any of the above are valid. It just needs to be a t since is unknown.
Explanation / Answer
THE RESEARCHERS SHOULD USE THE TWO SAMPLE T TEST BECAUSE HERE WE HAVE TO COMPARE THE DIFFERENCE BETWEEN THE TWO DIFFERENT GROUPS AND THIS CANNOT BE DONE BY A SINGLE SAMPLE TEST, HENCE THE ANSWER = OPTION c
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