Mathematics, 24.03.2020 05:41 shelbybibb99
Twenty-five samples of size 4 resulted in grand average as 30.0 minutes and average range as 2.5 minutes for the Excellante Cleaning Company’s average time to completely clean a rug. Estimate the standard deviation of the process. Please type your answer in two decimal places.
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Twenty-five samples of size 4 resulted in grand average as 30.0 minutes and average range as 2.5 min...
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