Mathematics
Statistics! Find the minimum sample size

Question Description

A researcher wishes to estimate, with 90% confidence, the proportion of people who own a home computer. A previous study shows that 40% of those interviewed had a computer at home. The researcher wishes to be accurate within .02 of the true proportion. Find the minimum sample size necessary.

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Final Answer

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estimated value=90%

value of those who have computers=40%

accurate range=0.02

40/90

=0.44

0.44-0.02

=0.42

Please let me know if you need any clarification. I'm always happy to answer your questions.

ngunyag (125)
Carnegie Mellon University

Anonymous
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