Question $3$

Indicate the type of sampling method used below. $(2$ points each$)$

A$)$ A radio station asks its' listeners to call in and give their opinion regarding

the use of U$.$S$.$ forces in peacekeeping missions.

B$)$ To learn how its employees felt about higher student fees imposed by the

legislature, a university divided employees into three categories: staff,

faculty, and student employees. A random sample was selected from each

group and asked for their opinions.

C$)$ The presider of a guest$-$lecture series at a university stands outside the

auditorium before a presentation begins and hands every fifth person who

arrives, beginning with the third, a speaker evaluation survey to be

completed and returned at the end of the program.