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Answer to Question #10442 in Statistics and Probability for John

Question #10442
A population has a mean of 20 and a standard deviation of 5.4. A simple random sample of size 35 will be taken and the sample mean will be used to estimate the population mean. Specify the sampling distribution of X bar. (X with a bar above it)
Expert's answer
To solve the problem, ones need to know the precise distribution of the element of the sample. I believe, that they have N(20, 5,4^2), hence due to the properties of independent gaussian r.v. X ~ N(20, 5,4^2/30).

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