PT June2007.S3.Q15 - a consumer magazine

Grey Warden

http://7sage.com/lsat_explanations/lsat-june-2007-section-3-question-15/
Hey, could anyone please help me understand how answer choice B does not weaken the argument? if there were more people with more than 6 months treatment responding then the absolute number of people representing 36 percent will become more than the absolute number of people representing 20 percent. If this increase in people with more than 6 months treatment happens wouldn't that give an alternative explanation of the discrepancy in percentages?

LSATisland

Hi @Riju2015

The percentage in the stimulus is "of those responding who have received" the mentioned treatment. So even if the 6+ months group had more people responding, the percentage of those that felt the treatment "made things a lot better" is still a bigger percentage than the 6- months group.

Grey Warden

Thank you @LSATisland