A Statistics Instructor Wishes to Know the Average Age (In

Multiple Choice

A Statistics instructor wishes to know the average age (in month) of his 200 students.He is too lazy to sample all 200 students so he decides to choose 20 students at random from the class and ask them for their age.He orders all students alphabetically by their first name.He then selects every 10th person on the list to be in his sample.This sampling method is called a

A) Cluster Sample.
B) Simple Random Sample.
C) Voluntary Sample.
D) Stratified Random Sample.
E) Systematic Random Sample.