Question
How does the Z equation change for the standardized sample mean?
How does the Z equation change for the standardized sample mean?
Homework Answers
Answer #1
Answer
General equation for the z score is given as
where 
is sample
mean, 
is population mean
and 
is population
standard deviation
When converting the z equation to standardized sample mean, we need to change the standard deviation
new standard deviation becomes 
where n is the sample size
So, the z equation for the standardized sample mean become
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