The manager of a popular Restaurant wants to know what types of vegetarian dishes people prefer to eat which sample would provide the most accurate data
a. 10 friends at a cookout
B. The first 30 people leaving a local hamburger stand.
C. A random group of 40 people on the street. D. A random group of five people at a grocery store

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)?