In 2011, the Institute of Medicine (IOM), a non-profit group
affiliated with the US National Academy of Sciences, reviewed a
study measuring bone quality and levels of vitamin-D in a random
sample from bodies of 675 people who died in good health. 8.5% of
the 82 bodies with low vitamin-D levels (below 50 nmol/L) had weak
bones. Comparatively, 1% of the 593 bodies with regular vitamin-D
levels had weak bones.
True or False? If the hypothesis test has P-value = 0.03, IOM
researchers can conclude that low vitamin-D levels cause weak
bones.
False
True
