A study has a quota of 200. If you can expect 80% of you sample to recovery in 6 days, how many pieces of sample will need to be added to the study in order to reach quota in 6 days.
I think the correct answer would be "50" because they ask how many pieces will need to be added.
80% of 200 is 160 so would it be 40 that is needed?
Feb 27, 2010