Posted by **Anonymous** on Sunday, February 5, 2012 at 12:18am.

An internet supplier of refilled ink cartridges for ink jet printers sold cartridges to 30,000 customers over the past two months. A random sample of 1000 of those customers revealed that 18% were not happy with their purchase. The margin of error was 2%. What range is likely to contain the population parameter?

29,000 to 31,000

14% to 22%

16% to 20%

480 to 600

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