A survey is proposed to be conducted to know the annual earnings of the old Statistics graduates of Delhi University. How large should the sample be taken in order to estimate the mean monthly earnings within plus and minus dollar 10,000 at 95% confidence level? The standard deviation of the annual earnings of the entire population is known to be dollar 30,000.

A survey is proposed to be conducted to know the annual earnings of the old Statistics graduates of Delhi University. How large should the sample be taken in order to estimate the mean monthly earnings within plus and minus dollar 10,000 at 95% confidence level? The standard deviation of the annual earnings of the entire population is known to be dollar 30,000.

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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