A social service agency plans to conduct a survey to determine the mean income of its clients.
Question:
a. Do you need to have an estimate of the current mean income to answer this question? Why or why not?
b. What sample size should be drawn to meet the directors requirement at the 95% level of confidence?
c. What sample size should be drawn to meet the director's requirement at the 99% level of confidence?
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a No estimate of the mean is needed The error in a sample is ...View the full answer
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Related Book For
Social Statistics For A Diverse Society
ISBN: 9781483333540
7th Edition
Authors: Chava Frankfort Nachmias, Anna Leon Guerrero
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