Posted by tara on Wednesday, December 13, 2006 at 7:16am.
Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produces about 20,000 bottles in a 24hour period. Julio samples about 120 bottles an hour and rejects the line ifhe finds more than 1/50 of the sample to be defective. About how many defective bottles should Julio allow before rejecting the entire line?
if i take the 20,000 x by 1/50 i get 400 bottles or do i need to take the 120 that is done hourly and
120 x 1/50= 2 2/5. Please explain to me if I am doing this wrong
I read this problem as he rejects the line, whatever that line is. It is not explicit what he rejects.
In a sample, as you figured, 2.4 is 1/50 of the sample 120. So he accepts the "line" if two or less is defective, and he rejects the "line" if three or more is defective.

math  nicole, Friday, October 17, 2008 at 11:00pm
Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produces about 20,000 bottles in a 24hour period. Julio samples about 120 bottles an hour and rejects the line if he finds more than 1/50 of the sample to be defective. About how many defective bottles should Julio allow before rejecting the entire line?
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