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     EduGorilla 
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    Directions: The given question is based on the following paragraph.

    A National Institute of Health, Atlanta study shows that uncooked or improperly cooked pork consumption results in a severely infectious disease of the liver, caused by an organism called the tapeworm. In this study, 1000 humans in an experimental group were given improperly cooked pork while a control group (consisting of 1000 humans) was given perfectly cooked pork. Within a couple of weeks, around 80% of those who had consumed partially cooked pork showed symptoms of the tapeworm infection. Thus, the study concluded that the infection must be due to the organism, which does not get killed, in case the pork is not properly cooked.

    The above argument gets considerably weakened if we could show that

    Options :-

    1. some of the experimental group subjects were not medically checked to know the condition of their liver
    2. the scientists conducting the follow-up adopted a double-blind approach i.e. they did not know which subject had which kind of pork and they were unaware of the purpose of the experiment
    3. the experimenters had a well worked-out definition of this particular illness and its symptoms
    4. the two groups did not have differential immunity to infection
    5. the subjects did not know the purpose behind the experiment
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Reply To: Directions: The given question is based on the following paragraph. A National Institute of Health, ….
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