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A statistics practitioner would like to estimate a population mean to within 40 units with 99% confidence given that the population standard deviation is 160.

a. What sample size should be used?

b. Redo the part changing the standard deviation to 50.

c. Redo part a using a 95% confidence level.

d. Redo part wherein we wish to estimate the population mean within 8 units.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91001281

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