=+64. Polling. Professional polling organizations face the challenge of selecting a representative sample of U.S. adults by
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=+64. Polling. Professional polling organizations face the challenge of selecting a representative sample of U.S. adults by telephone. This has been complicated by people who only use cell phones and by others whose landline phones are unlisted. A careful survey by Democracy Corps determined the following proportions:
Cell phone only 39%
Both cell and landline 29%
Landline only listed 22%
Landline only unlisted 7%
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Related Book For
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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