Question: If a process only has random variations, then 95.5% of the time the sample averages will fall within approximately 1 standard deviation of the population

If a process only has random variations, then 95.5% of the time the sample averages will fall within approximately

1 standard deviation of the population mean

2 standard deviation of the population mean

3 standard deviation of the population mean

4 standard deviation of the population mean

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