Examlex
Samples of size 2,500 will produce estimates of the population value that are __________ times more accurate than samples of size 25.(Assume the population is bell-shaped.Use standard deviation as a measure of accuracy.)
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Obstetrics
A branch of medicine and surgery concerned with childbirth and the care of women giving birth.
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A medical test involving the removal of tissue from a living body to examine it for disease.
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