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Answer to Question #84191 in Statistics and Probability for Ra

Question #84191
A random sample of size 64 has been drawn from a population with standard deviation 20. The mean of the sample is 80. i) Calculate 95% confidence limits for the population mean. ii) How does the width of the confidence interval changes if the sample size is 256 instead?
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Expert's answer
2019-01-18T09:02:11-0500
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