Vol. 12, No. 5
May 2010
PQ Systems
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Quality Quiz from Professor Cleary

Last month, Quinn Quip, of Quince Quality Quiche, learned to build confidence intervals for proportional data using this formula:


The quiz concluded with the question, “If Quinn wanted to be 95 percent confident of his plus-and-minus 2 percent interval, what would he need to do? Is it possible to do this?”

a) Yes

b) No


Click here for a more complete video explanation

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