SOLUTION: A statistic practitioner took a random sample of 50 observations from a population with a standard deviation of 25 and computed the sample mean to be 100. estimate the population m

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Question 939125: A statistic practitioner took a random sample of 50 observations from a population with a standard deviation of 25 and computed the sample mean to be 100. estimate the population mean with 99% confidence.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
ME = 2.576(25/sqrt(50)) = 9 rounded
CI: (91,109)


 = CI	z = value

90%	z =1.645

92%	z = 1.751

95%	z = 1.96

98%	z = 2.326

99%	z = 2.576