medium · GMAT Verbal
A luxury hotel chain noticed that guest satisfaction scores were 20% higher at locations that featured live piano music in the lobby compared to those that did not. To increase scores across the entire chain, the hotel plans to install pianos and hire musicians for all its locations.
Which of the following, if true, most calls into question the success of the hotel's plan?
- Guest satisfaction scores are influenced by many factors, including room cleanliness and staff responsiveness.
- The locations currently featuring live music are primarily historic properties in quiet areas, while the other locations are mostly modern business hotels in loud city centers.
- The cost of hiring professional pianists has risen by 10% over the last year.
- Some guests at the locations with pianos reported that they barely noticed the music during their check-in process.
- Installing pianos and hiring musicians for every location would cost the hotel chain more than the live-music locations currently spend on lobby decor.
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