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July 28, 2015

Homework Help: statistics

Posted by Varun on Thursday, November 18, 2010 at 5:05am.

A random samples of 250 bolts manufactured by machine A and 200 bolts manufactured by machine B showed 24 and 10 defective bolts respectively. Test the hypothesis that the machines are showing difference qualities of performance. Use 5 per cent level of significance.

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