Problema Solution
Sample size = 400; sample mean = 44; sample standard deviation = 16. What is the margin of error?
Answer provided by our tutors
The margin of error can be calculated by using this formula
E= 2S/√n
where E=error, S=standard deviation and n=sample size.
In our case S=16, n=400
E=2*16/√400
E=2*16/20
E=32/20
E=1.6