3. From a population of 500 elements, a sample of 225 elements is selected. It is known...
3. From a population of 500 elements, a sample of 225 elements is selected. It is known that the population standard deviation is 25. Calculate the appropriate standard error of the mean (round to the 2nd decimal place).
Homework Answers
Solution :
Given that,
standard deviation = 
=25
n = 225
standard error=
= /
n = 25/
225=1.67
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