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Determine the calculated value of the test statistic

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Question

Determine the calculated value of the test statistic (z) if the hypothesized proportion is 0.55, the sample size is 521, and the sample proportion is 0.33.;The correct answer is -10.09. I just need instructions on how to get to the correct answer

 

Paper#35490 | Written in 18-Jul-2015

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