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Mathematics 21 Online
OpenStudy (anonymous):

At your summer job with a research company, you must get a random sample of people from your town to answer a question about spending habits. Which of the following methods is most likely to be random? A: You survey customers at the local shopping mall. B:You survey people chosen randomly from the local phone book. C:You survey several of your friends. D:You survey customers at a popular restaurant.

jimthompson5910 (jim_thompson5910):

which one did you get

OpenStudy (anonymous):

i think its D but not sure

jimthompson5910 (jim_thompson5910):

is that sample representative of the population as a whole?

OpenStudy (anonymous):

its B

jimthompson5910 (jim_thompson5910):

better, surveying people at a restaurant leaves out the people that don't go out to eat

jimthompson5910 (jim_thompson5910):

but looking up people in a phone book is more inclusive (assuming everyone has a listed number)

OpenStudy (anonymous):

okay thx

jimthompson5910 (jim_thompson5910):

np

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