SOLUTION: The First National Bank of Wilson has 700 checking account customers. A recent sample of 50 of these customers showed 30 to have a Visa card with the bank.
Construct the
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-> SOLUTION: The First National Bank of Wilson has 700 checking account customers. A recent sample of 50 of these customers showed 30 to have a Visa card with the bank.
Construct the
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Question 923325: The First National Bank of Wilson has 700 checking account customers. A recent sample of 50 of these customers showed 30 to have a Visa card with the bank.
Construct the 95 percent confidence interval for the proportion of checking account customers who have a Visa card with the bank. (Round your answers to 3 decimal places.)
Confidence interval for the proportion of checking account customers who have a Visa card with the bank is ... and ...
You can put this solution on YOUR website! p(have card) = 30/50 = .6
95 percent confidence interval
ME = 1.96 sqrt(.6*.4/50) = .136
CI: = .60 - .132 < u < .60 + .132
CI: ( .468, .732)
