Which expressions are equivalent to -7z + (-2.5) + 3.5z +4y -4.5
1 answer:
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Answer: $5656.85
Step-by-step explanation:
The standard error of the mean measures the dispersion of sample means about the population mean .
It is also known as the standard deviation of its sampling distribution.
Formula : , where
= population standard deviation.
n= sample size.
As per given , we have
sample size : n= 50
Then, the standard error of the mean will be :-
Hence, the standard error of the mean= $5656.85