The school district is interested in knowing if the students and parents are supportive of a longer school day. the school conducts a poll of students and parents and summarizes it in the table below. yes no total parents 280 30 310 students 15 190 205 total 295 220 515 what percentage of parents and students were not supportive of a longer school day? 30% 38% 43% 34%

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)?