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      11-01-2012, 01:54 AM   #19
sfax
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Drives: BMW X3 2011 F25
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3% is a black mark? On a sample size of "more than 20"? If they said "more than 20" I'm guessing the sample isn't much more than 20. It would be a stupid thing to say with a sample size of 100 or 1000. So 0/20 is 0% and 1/20 is 5% so 1 problem creates a black mark.

Here's a better statistic: CR = Zero credibility with a 99% confidence interval
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