After a number of complaints about its tech assistance a computer manufacturer examined samples of...
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After a number of complaints about its tech assistance a computer manufacturer examined samples of calls to determine the frequency of wrong advice given to callers Each sample consisted of 100 calls Number of errors 1 2 5 3 UCL LCL 35 4 7 54 66 SAMPLE 7 8 9 10 11 12 13 14 15 16 8 459 3 4 5 6 6 7 Click here for the Excel Data File a Determine 95 percent limits Do not round your intermediate calculations Round your final answers to 2 decimal places Round up any negative control limit value to zero b Is the tech assistance process stable i e in control O The process is in control
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