![SOLVED: A student exchanges the stock headphones (β1 = 89 dB) for her mp3 player for a new set that is louder (β2 = 92.5 dB). If the first set produced a SOLVED: A student exchanges the stock headphones (β1 = 89 dB) for her mp3 player for a new set that is louder (β2 = 92.5 dB). If the first set produced a](https://cdn.numerade.com/ask_previews/cb767dd8-7a63-4a51-a56c-00ba712b429d_large.jpg)
SOLVED: A student exchanges the stock headphones (β1 = 89 dB) for her mp3 player for a new set that is louder (β2 = 92.5 dB). If the first set produced a
![db1100-mp3 - Portable weatherproof High SPL Sound Engine(with MP3) - db Series PA Speaker - Beta Three Technology Creates Sound Enjoyment db1100-mp3 - Portable weatherproof High SPL Sound Engine(with MP3) - db Series PA Speaker - Beta Three Technology Creates Sound Enjoyment](http://www.beta3pro.com/uploads/products/db1100-mp3/db1100.jpg)
db1100-mp3 - Portable weatherproof High SPL Sound Engine(with MP3) - db Series PA Speaker - Beta Three Technology Creates Sound Enjoyment
![Amazon.com: Aexit Continuous Sound MP3 Player Accessories Decibel Piezo Buzzer IC Alarm Speaker DC Speaker Systems 12V 120db : Electronics Amazon.com: Aexit Continuous Sound MP3 Player Accessories Decibel Piezo Buzzer IC Alarm Speaker DC Speaker Systems 12V 120db : Electronics](https://m.media-amazon.com/images/I/6116aefPG1L._AC_UF894,1000_QL80_.jpg)
Amazon.com: Aexit Continuous Sound MP3 Player Accessories Decibel Piezo Buzzer IC Alarm Speaker DC Speaker Systems 12V 120db : Electronics
![Mp3 Player Ritmix Rf-4850 8gb Lilac (20-20000 Gb, 70 Db, Lcd Display 1,8 Inches, Microsd Up To 16 Gb, 3,5mm) - Mp3 Players - AliExpress Mp3 Player Ritmix Rf-4850 8gb Lilac (20-20000 Gb, 70 Db, Lcd Display 1,8 Inches, Microsd Up To 16 Gb, 3,5mm) - Mp3 Players - AliExpress](https://ae01.alicdn.com/kf/Sfbfd6b7225e84ee5bceba2409e4f22b8y/MP3-player-ritmix-rf-4850-8GB-lilac-20-20000-GB-70-dB-LCD-display-1-8.jpg)