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Consider an infinite population with a mean of 100 and a standard deviation of 20. A...

Consider an infinite population with a mean of 100 and a standard deviation of 20. A random sample of size 64 is taken from this population. The standard deviation of the sample mean equals 2.50.

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Answer #1

Solution :

Given that ,

mean = = 100

standard deviation = = 20

n = 64

The standard deviation of the sample mean= =  / n= 20 / 64=2.50

The standard deviation of the sample mean= =2.50

answer is true

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