hard · LSAT Logical Reasoning
A pharmaceutical company reports that patients who took its new sleep aid fell asleep an average of 15 minutes faster than patients given no treatment at all. The company concludes that its sleep aid is an effective treatment for insomnia and should be widely prescribed.
Which one of the following, if true, most seriously undermines the company's conclusion?
- Patients given an inert placebo in the same study fell asleep, on average, just as much faster than the untreated patients did.
- The new sleep aid is somewhat more costly to buy than several competing insomnia medications already sold widely on the market.
- The new sleep aid is wholly incapable of helping any person who has any kind of sleep difficulty whatsoever, in any case at all.
- Patients taking the new sleep aid reported consistently waking up feeling far more rested and refreshed than they had in years.
- Insomnia today affects a considerably larger share of the general adult population than it did roughly a decade or so ago.
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