Il-1b is a protein released by cells under conditions of infection. excessive release of il-1b can be very damaging and can lead to severe disease. in a typical experiment, the typical concentration of il-1b around stressed cells is 800 t 113 pg/ml. a researcher is testing drugs that can inhibit il-1b release. she tests two drugs, drug-1 and drug-2, for their effects on il-1b release. if the drugs have a z-score of -2.5, she will consider them promising for future study. in her experiment, stressed cells treated with drug-1 yielded 1104 pg/ml of il-1b, while yielded 540 pg/ml of il-18. is she going to continue studying either drug, and if so, which one?