You are not logged in.
Post a reply
Topic review (newest first)
- Sari
- 2005-10-29 05:37:29
That's where they went wrong then. They were counting the ENTIRE production line, but we were only interested in Julio's amount.
Thanks! I'm glad I found this site. You were a great help!
- mathsyperson
- 2005-10-29 04:34:29
Because you are only interested in the bottles that Julio samples. Of the 20,000 bottles produced every day, Julio only samples 2,880 of them. He assumes that if over 1/50 of his sample is faulty then over 1/50 of all the bottles will be faulty and so he rejects the line. In his sample, 1/50 of the bottles is 57.6, so the lowest whole number that is too high is 58 and so he must reject the line if he gets 58 defective bottles or more.
- Sari
- 2005-10-29 03:08:39
A friend of mine said 400. Because you divide 20,000 from 50. Why is this wrong so I can tell them?
- mathsyperson
- 2005-10-29 02:47:38
Assuming they work poor Julio all day, he will sample 120 x 24 = 2880 bottles in one day. 1/50 of this is 2880 ÷ 50 = 57.6 bottles, so he would reject the line if 58 or more of the bottle were defective.
- Sari
- 2005-10-29 02:23:07
Julio works as a quality control expert in a beverage factory. The assembly line that he monitors produces about 20,000 bottles in a 24 hour 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?
I need to know how you got to the answer. Thanks 