Sam Smith,the CEO of a local TV station,recently conducted a study of TV watchers in his area.He obtained a list of all residential customers from the cable TV company's billing list.He selected customers from the 20 000 households on the billing list by taking every fortieth household.A trained interviewer then visited each household and asked detailed questions about the viewing habits of various family members. How large is Sam Smith's sample?
A)500
B)1000
C)1500
D)2000
E)20 000

Question

Quizplus · Accepted Answer

Sam Smith selected every fortieth household from the 20,000 households on the billing list. So, the sample size is 20,000/40 = 500.

Sam Smith,the CEO of a Local TV Station,recently Conducted a Study