According to the central limit theorem, if a sample of size 81 is drawn from a population with a variance of 16, the standard deviation of the distribution of the sample means would equal _______.
.98
.44
.68
.87
.75
Solution :
Given that ,
2
= 16
standard deviation =
= 4
n = 81
sampling distribution of standard deviation
=
/
n = 4 /
81
= 0.44
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