The per capita electric power consumption level in a recent year in Ecuador is normally distributed, with

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The per capita electric power consumption level in a recent year in Ecuador is normally distributed, with a mean of 471.5 kilowatt-hours and a standard deviation of 187.9 kilowatt-hours. Random samples of size 35 are drawn from this population, and the mean of each sample is determined.


Find the mean and standard deviation of the indicated sampling distribution of sample means. Then sketch a graph of the sampling distribution.

Distribution
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