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?

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?