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In 1984, almost 2 percent of humans who were admitted to hospital emer

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In 1984, almost 2 percent of humans who were admitted to hospital emer  [#permalink]

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New post 26 Nov 2018, 11:53
1
00:00
A
B
C
D
E

Difficulty:

  65% (hard)

Question Stats:

56% (01:38) correct 44% (01:59) wrong based on 136 sessions

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In 1984, almost 2 percent of humans who were admitted to hospital emergency rooms after suffering a scorpion bite in the southwestern United States died from the attack. Ten years later, this figure had jumped to 4 percent. Clearly, the venom of the scorpion has become much more toxic to humans.

Which of the following statements, if true, most seriously weakens the above conclusion?

A) The scorpion population in the southwestern United States has remained steady since 1984.

B) There have been few innovations in the treatment of scorpion bites since 1984.

C) Most people who suffer scorpion bites are inexperienced hikers who are unaware of the best methods to avoid coming in contact with a scorpion.

D) Since 1984, people have learned that scorpion bites can be treated in the home as long as they are detected early.

E) People who survive one scorpion bite have a better than average chance of surviving a second bite.

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Re: In 1984, almost 2 percent of humans who were admitted to hospital emer  [#permalink]

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New post 26 Nov 2018, 17:59
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X= Number of humans who were admitted to hospital emergency rooms after suffering a scorpion bite in the southwestern United States IN 1984
Y= Number of humans who were admitted to hospital emergency rooms after suffering a scorpion bite in the southwestern United States in 1994

According to conclusion.
2% of X < 4% of Y

To weaken it, we have to show Y<<X
And D matches to this point.

D is correct.
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Re: In 1984, almost 2 percent of humans who were admitted to hospital emer  [#permalink]

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New post 26 Nov 2018, 22:59
The answer will be D but this is a bad question.We have to assume that people who get treated in the house will not be treated properly.I feel this is not a straightforward assumtion to make.

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Re: In 1984, almost 2 percent of humans who were admitted to hospital emer  [#permalink]

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New post 26 Nov 2018, 23:21
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SajjadAhmad wrote:
In 1984, almost 2 percent of humans who were admitted to hospital emergency rooms after suffering a scorpion bite in the southwestern United States died from the attack. Ten years later, this figure had jumped to 4 percent. Clearly, the venom of the scorpion has become much more toxic to humans.

Which of the following statements, if true, most seriously weakens the above conclusion?

A) The scorpion population in the southwestern United States has remained steady since 1984. - If the scorpion population remains steady, we would think that the fatality of scorpion stings would also remain steady. Since it has doubled, there must be a reason, and given this new information, the conclusion that the venom is more toxic still holds true - this one is out

B) There have been few innovations in the treatment of scorpion bites since 1984. - Same logic as Ans. A, if treatment has remained steady, we would think fatality would remain steady... etc. - this one is out

C) Most people who suffer scorpion bites are inexperienced hikers who are unaware of the best methods to avoid coming in contact with a scorpion. - This one is a little tempting (mostly because no other answer sticks out), but there is no reason to believe that this has changed since 1984. Following same logic as Ans. A & B - this one is out

D) Since 1984, people have learned that scorpion bites can be treated in the home as long as they are detected early. - At first glance this one is easy to blow past, but remember that the prompt is dealing with fatality OF THOSE ADMITTED TO EMERGENCY ROOMS. Given this particular piece of information, we can infer that perhaps less serious bites are taken care of at home, as people are more aware of this, and only the most severe cases end up in the emergency room. If this is true, then venom isn't more toxic, it is just the cases in emergency rooms are more dire. Admittedly, I didn't catch this at first pass, but felt this answer choice had to be correct because it is the only one that demonstrates a change between 1984 and 1985. After re-reading the prompt, the logic stands out and it becomes the clear choice.

E) People who survive one scorpion bite have a better than average chance of surviving a second bite. - This one is irrelevant to whether the venom has become more toxic - it is out, too


Correct Choice is Ans Choice D. Explanations in-line above.
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Re: In 1984, almost 2 percent of humans who were admitted to hospital emer   [#permalink] 26 Nov 2018, 23:21
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