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August 2, 2015

Homework Help: statistics

Posted by yoli on Saturday, October 30, 2010 at 1:43pm.

A large bank believes that one-third of its checking customers have used at least one of the bank's other services during the past year. How large a sample is required to estimate the actual proportion within a range of plus and minus 0.04? Use the 98 percent level of confidence.

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