Mathematics, 19.03.2020 22:52 MadisonElle
The operating costs for each machine for one day have an unknown distribution with mean 1610 and standard deviation 136 dollars. A sample, with size n=45, was randomly drawn from the population. Using the Central Limit Theorem for Means, what is the standard deviation for the sample mean distribution? Select the correct answer below: 3.02 20.27 25.34 30.41 34.47 136.00
Answers: 1
and standard deviation 
, the sample means with size n of at least 30 can be approximated to a normal distribution with mean 
. So
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