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25 Aug 2006, 19:57
Kudos
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Anyone know the answer to this and can explain: I will post right answer after giving you guys a shot
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A certain lab is studying the incidence of fatal liver damage in rats. Sixty five percent of all rats whose environment exposed them to low levels of the toxin sulphur died of liver disorder. Ninety percent of all rats who died of liver disorder, however were not exposed to any environmental toxins.
Which of the following provides a feasible explanation for the statistics above:
a. environmental and non environmental causes of liver disease in rats are mutually exclusive
b. there is only one cause of fatal liver disorder in rats.
c. Environmental toxins are not particularly dangerous to livers of rats
d. Only a small portion of the entire group of rats studied was exposed to environmental sulphur
e. Most rats will not suffer from exposure to low levels of sulphur
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A certain lab is studying the incidence of fatal liver damage in rats. Sixty five percent of all rats whose environment exposed them to low levels of the toxin sulphur died of liver disorder. Ninety percent of all rats who died of liver disorder, however were not exposed to any environmental toxins.
Which of the following provides a feasible explanation for the statistics above:
a. environmental and non environmental causes of liver disease in rats are mutually exclusive
b. there is only one cause of fatal liver disorder in rats.
c. Environmental toxins are not particularly dangerous to livers of rats
d. Only a small portion of the entire group of rats studied was exposed to environmental sulphur
e. Most rats will not suffer from exposure to low levels of sulphur
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26 Aug 2006, 03:26
Kudos
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shouldn't it be D ... if only 10% of the rats constitute the total no of rats died of liver disorderand which in turn represent 65% of rats exposed to environmental toxin , we can conclude that Only a small portion of the entire group of rats studied was exposed to environmental sulphur.
