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December 20, 2014

December 20, 2014

Posted by **Jamey** on Sunday, January 13, 2008 at 5:23pm.

a) Assuming that 15% of all manufactured pencils are defective, what is the probability of finding at least 80 percent defective pencials in this sample?

b) If 120 pencils are found to be defective in today's sample, is it likely that the manufacturing process may need improvements? Explain....

- Data Management -
**Emily**, Sunday, January 13, 2008 at 5:31pmI probably read this problem wrong, but wouldn't (a) be a trick question? If you take 15% defected pencils out of however many regular pencils, that particular sample will be all defected, wouldn't it? Like I said, I probably read it wrong, so plz wait for a different answer. :-)

- Data Management -
**Anonymous**, Sunday, January 13, 2008 at 5:33pmBesides, did you realize you posted the same question within less than an hour? Please be patient with these people-- they're doing their best.

- Data Management -

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