Vitamin labels may be wrong. The amounts of Vitamin D present in supplements sold over the counter
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Vitamin labels may be wrong.
The amounts of Vitamin D present in supplements sold over the counter often bear little resemblance to the descriptions on the bottle labels, a new study concludes.
Researchers used high-performance liquid chromatography to analyze pills in 55 bottles of vitamin D bought at five stores in Portland, Ore. Their results were published online last week in JAMA Internal Medicine.
Researchers conduct a __________ hypothesis test?
Select one:
a. Two-tailed
b. Directional
c. T
d. Correlational
e. One-tailed
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