Construct a 99 percent confidence interval for customers
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The First National Bank of Wilson has 650 checking accounts customers. A recent sample of 50 of these customers showed 26 to have a VISA card with the Bank. Construct the 99 percent confidence interval for the proportion of checking account customers who have a VISA card with the bank.
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Solution Summary
This solution constructs a 99% confidence interval.
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Sample proportion = 26/50=0.52
Standard Error = (pq/n)^0.5 ...
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