How large sample is required to estimate actual proportion

Reference no: EM13147916

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. How is the z value found on the table?

Reference no: EM13147916

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