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A population of values has a normal distribution with μ=169μ=169 and σ=84.7σ=84.7. You intend to draw...

A population of values has a normal distribution with μ=169μ=169 and σ=84.7σ=84.7. You intend to draw a random sample of size n=157n=157.

What is the mean of the distribution of sample means?
μ¯x=μx¯=

What is the standard deviation of the distribution of sample means?
(Report answer accurate to 2 decimal places.)
σ¯x=σx¯=

Math   Statistics-And-Probability   
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Answer #1

given data are:-

the mean of the distribution of sample means is:-

the standard deviation of the distribution of sample means is:-

[ here, the sample size (n) = 157> 30...we can say that the sample mean will follow normal distribution ]

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