Scenario # 2 : Agitated Bees data Ethyl Ene was attending garden tea party when she noticed that some women seemed to attract more bees around them than other women . This caused her to won der if certain perfumes contained chemicals that to agitate bees . After some back ground reading , Ethyl learned that many perfumes contain a particular organic compound referred to as Ester X. Ester X is known to attract and excite bees . Because perfume formulas are secret , she decided to determine if the unknown Ester X was present in four different perfumes ( Confusion Beware , Purple Hays , Elemental ) by observing the bees ' behavior . Joanna's procedure was as follows . She placed a watch glass con taining 10 ml of the perfume 3meters from the hive opening . She recorded the time required for the bees to emerge and made observations about their behavior including the time it took bees to approach the watch glass . After a 30 minute recovery period , she tested the next perfume . She compared the bee behavior to a watch glass of 10 ml of distilled water . She repeated the procedure six times for each perfume .