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Problem 10-28 (Algo) The following is a control chart for the average number of minor errors in 22 service reports. UCL LCL a. Calculate the observed mean, expected mean, standard deviation and z value for the median and up/down test. Use z = +/-2 to compare your z test scores. (Negative amounts should be Indicated by a minus sign. Round your answers to 2 decimal places.) Test Median Up/Down Observed 15.00 19.00 Expected 12.00 14.33 Std. dev 2.29 1.89 b.Based on your calculation conclude whether the test is random or non-random.

Problem 10-28 (Algo) The following is a control chart for the average number of minor errors in 22 service reports. UCL LCL a. Calculate the observed mean, expected mean, standard deviation and z value for the median and up/down test. Use z = +/-2 to compare your z test scores. (Negative amounts should be Indicated by a minus sign. Round your answers to 2 decimal places.) Test Median Up/Down Observed 15.00 19.00 Expected 12.00 14.33 Std. dev 2.29 1.89 b.Based on your calculation conclude whether the test is random or non-random.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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Problem 10-28 (Algo) The following is a control chart for the average number of minor errors in 22 service reports. UCL LCL a. Calculate the observed mean, expected mean, standard deviation and z value for the median and up/down test. Use z = +/-2 to compare your z test scores. (Negative amounts should be Indicated by a minus sign. Round your answers to 2 decimal places.) Test Median Up/Down Test Observed 15.00 19.00 Median Up/Down Expected Conclusion 12.00 14.33 b.Based on your calculation conclude whether the test is random or non-random. Std. dev 2.29 1.89
Transcribed Image Text:Problem 10-28 (Algo) The following is a control chart for the average number of minor errors in 22 service reports. UCL LCL a. Calculate the observed mean, expected mean, standard deviation and z value for the median and up/down test. Use z = +/-2 to compare your z test scores. (Negative amounts should be Indicated by a minus sign. Round your answers to 2 decimal places.) Test Median Up/Down Test Observed 15.00 19.00 Median Up/Down Expected Conclusion 12.00 14.33 b.Based on your calculation conclude whether the test is random or non-random. Std. dev 2.29 1.89
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