Mathematics, 14.11.2019 21:31, kyao5780

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?

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The operating costs for each machine for one day have an unknown distribution with mean 1610 and sta...