=+70. More Internet music. A random sample of 168 students was asked how many songs were in
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=+70. More Internet music. A random sample of 168 students was asked how many songs were in their digital music library and what fraction of them was legally purchased.
Overall, they reported having a total of 117,079 songs, of which 23.1% were legal. The music industry would like a good estimate of the proportion of songs in students’ digital music libraries that are legal.
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Business Statistics Plus Pearson Mylab Statistics With Pearson Etext
ISBN: 978-1292243726
3rd Edition
Authors: Norean R Sharpe ,Richard D De Veaux ,Paul Velleman
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