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C. Most cola drinkers prefer beverages without vinegar, even when they do not know vinegar is present.

Selected this because the wording and the given percentage seemed to suggest that we're considering the two groups of tasters a one big group and then by saying
The first group: almost two to one preference of vinegar over classic = approx. 66% of taster prefer vinegar. So approx. 33% prefer classic
The second group: 98% prefer classic
So now we have 33% classic + 98% classic vs 66% of vinegar + 2% of vinegar

Combined with the fact that most scientifically sound research should divide their subject into two groups of equal number of people to get a valid result the
It seems logical to conclude that (considering the entire research as a whole) "most cola drinkers prefer classic over vinegar, even when they do not know vinegar is present"

Would it be more clear if we put in an addition clarification for this answer choice?
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Thank you 🙏
It makes sense that the research methodology would spit the groups, and you are correct, there has to be 2 groups of equal size. I did not even think about it. I have added this clarification to answer choice C.

cburanawit
C. Most cola drinkers prefer beverages without vinegar, even when they do not know vinegar is present.

Selected this because the wording and the given percentage seemed to suggest that we're considering the two groups of tasters a one big group and then by saying
The first group: almost two to one preference of vinegar over classic = approx. 66% of taster prefer vinegar. So approx. 33% prefer classic
The second group: 98% prefer classic
So now we have 33% classic + 98% classic vs 66% of vinegar + 2% of vinegar

Combined with the fact that most scientifically sound research should divide their subject into two groups of equal number of people to get a valid result the
It seems logical to conclude that (considering the entire research as a whole) "most cola drinkers prefer classic over vinegar, even when they do not know vinegar is present"

Would it be more clear if we put in an addition clarification for this answer choice?
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I got a similar passage as a reading comprehension in one of the GMATclub Verbal sectional test. Even though this is CR question but I think only one of them should be present in the question pool for GMATCLUB Test.
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I got a similar passage as a reading comprehension in one of the GMATclub Verbal sectional test. Even though this is CR question but I think only one of them should be present in the question pool for GMATCLUB Test.
Could you please provide a link, ID or a screenshot of that RC question? Thank you!
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Bunuel

Could you please provide a link, ID or a screenshot of that RC question? Thank you!
Hello,

Here is the screenshot of that RC.


Attachment:
GMAT-Club-Forum-eortf8cn.png
GMAT-Club-Forum-eortf8cn.png [ 155.4 KiB | Viewed 445 times ]
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Thank you. I will keep this one as they are similar but not exactly related.
P.S. On the GMAT twin questions do happen though they won't happen in the same test. There are some notable examples that messed with our minds:


Three different versions from the OG that use the same setup for 3 separate CR questions:
https://gmatclub.com/forum/last-year-a- ... 31032.html
https://gmatclub.com/forum/last-year-a- ... 68517.html
https://gmatclub.com/forum/last-year-a- ... 50260.html


Markhu106

Hello,

Here is the screenshot of that RC.


Attachment:
GMAT-Club-Forum-eortf8cn.png
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