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A number of scientists’ salaries were reported; physicists’

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A number of scientists’ salaries were reported; physicists’ [#permalink] New post 30 Jul 2018, 09:09
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Question Stats:

28% (00:22) correct 71% (00:38) wrong based on 7 sessions
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A number of scientists’ salaries were reported; physicists’ salaries clustered around a mean of $100,000 and biologists’ clustered around a mean of $70,000. Which of the following statements could be true, according to the graph above?

Indicate all such statements.

A. Some biologists earn more than some physicists.
B. Both biologists’ and physicists’ salaries are normally distributed.
C. The range of salaries is greater than $150,000.
[Reveal] Spoiler: OA

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Re: A number of scientists’ salaries were reported; physicists’ [#permalink] New post 05 Aug 2018, 03:51
sandy wrote:
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A number of scientists’ salaries were reported; physicists’ salaries clustered around a mean of $100,000 and biologists’ clustered around a mean of $70,000. Which of the following statements could be true, according to the graph above?

Indicate all such statements.

A. Some biologists earn more than some physicists.
B. Both biologists’ and physicists’ salaries are normally distributed.
C. The range of salaries is greater than $150,000.


Can you please explain why C is correct?
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Re: A number of scientists’ salaries were reported; physicists’ [#permalink] New post 10 Aug 2018, 07:16
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Because it could be correct. The answer is not asking for must be correct . Its asking for could be
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Re: A number of scientists’ salaries were reported; physicists’ [#permalink] New post 12 Aug 2018, 09:49
sandy wrote:
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A number of scientists’ salaries were reported; physicists’ salaries clustered around a mean of $100,000 and biologists’ clustered around a mean of $70,000. Which of the following statements could be true, according to the graph above?

Indicate all such statements.

A. Some biologists earn more than some physicists.
B. Both biologists’ and physicists’ salaries are normally distributed.
C. The range of salaries is greater than $150,000.



Could you please explain how (A) is correct? Since the curve of biologists' salary begin only at the end of physicists' salary, wouldn't the physicists as a collective have higher salaries than all biologists under study?
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Re: A number of scientists’ salaries were reported; physicists’ [#permalink] New post 12 Aug 2018, 20:51
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Nowhere in the question it is mentioned that physicists' curve begin where the biologists' curve ends. The two curve collides at the right bottom of biologists' curve, so it's possible that some biologists at the bottom may have higher salary then physicists at the bottom of the curve.The questions ask for the possible conditions which might be true and not for ones which must be.
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Re: A number of scientists’ salaries were reported; physicists’ [#permalink] New post 13 Aug 2018, 03:11
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khrystal wrote:
Nowhere in the question it is mentioned that physicists' curve begin where the biologists' curve ends. The two curve collides at the right bottom of biologists' curve, so it's possible that some biologists at the bottom may have higher salary then physicists at the bottom of the curve.The questions ask for the possible conditions which might be true and not for ones which must be.



Yeah all scientists are in the two peak distribution as shown above. Some biologists would have higher salaries than physicists.
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Re: A number of scientists’ salaries were reported; physicists’   [#permalink] 13 Aug 2018, 03:11
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