September – December 2023 Control Chart

Business & Finance

Problem 10-28The following is a control chart for the average number of minor errors in 22 service reports.a.Calculate the observed mean, expected mean, standard deviation and z value for the median and up/down test. (Negative amounts should be indicated by a minus sign. Round your answers to 2 decimal places.)TestObservedExpectedStd. devzMedianUp/DownI know some of these answers are incorrect. Please assist

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