9/13 north america DS jj

renxiaochun

A question that I worked on for a while during the test.  This is all I can remember

For a factory, product defect or certain estimation ratio is calculated as r= |e-a|/a , with e being the estimated number of defect and abeing the actual defect.  In one period,the defect ratios for overall product produced and product Z are both less than10%.  If actual defect number of Z<25% of total product defect?

1.       Estimated product defect of Z is 25% of total estimated product defect.
2.       Total product defect number is given.

andreasyang

我选E，你呢?