Mathematics, 08.11.2019 05:31 maddie0533
Awell-known bank credit card firm wishes to estimate the proportion of credit card holders who carry a nonzero balance at the end of the month and incur an interest charge. assume that the desire margin of error is 0.03 at 98% confidence.
a) how large a sample should be selected if it is anticipated that roughly 70% of the firm�s card holders carry a nonzero balance at the end of the month?
b) how large a sample should be selected if no planning value for the proportion could be specified?
Answers: 2
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Awell-known bank credit card firm wishes to estimate the proportion of credit card holders who carry...
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