SOLUTION: a statistics practitioner would lie to estimate a population mean to within 40 units with 99% confidence given that the population standard deviation is 160.
a. what sample size s
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a. what sample size s
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Question 959099: a statistics practitioner would lie 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 part a changing the standard deviation to 50.
c. redo part a using a 95% confidence level.
d. redo part a wherein we wish to estimate the population mean within 8 units. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 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?'
n = [z*s/E]^2
n = [2.5758*160/40]^2 = [2.5758*4]^2 = 106.15
Round up to n = 107
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I'll leave b,c, and d to you::
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Cheers,
Stan H.
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b. redo part a changing the standard deviation to 50.
c. redo part a using a 95% confidence level.
d. redo part a wherein we wish to estimate the population mean within 8 units.
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