Random

The class roster lists the students enrolling in a swimming class. Suppose a
sample is to consist of every ninth student enrolled in the class. Initially, the
fourth student on the list was selected at random. That student is numbered 04.


http://i266.photobucket.com/albums/ii265/cheukhome/456.jpg?t=1208348256


1)List the class numbers and names of students to be chosen in the sample.
2)Identity the sampling method that was used above.