Multiple Choice
A market research firm has been engaged to do a study of dishwashing detergents preferred by homemakers in San Francisco 800,000 population) as compared to those preferred in New York 8,000,000 population) .In order to obtain results of about equal reliability in each city, the number of homemakers polled in New York should be
A) ten times the number polled in San Francisco.
B) 10 or 3.16 times the number polled in San Francisco.
C) about the same as in San Francisco.
D) half the number polled in San Francisco.
Correct Answer:
Verified
Correct Answer:
Verified
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