Determine frequency of wrong numbers given to callers

Reference no: EM13128226

After a number of complaints about its directory assistance, a telephone company examined samples of calls to determine the frequency of wrong numbers given to callers. Each sample consisted of 100 calls. Determine 95 pct limits. Is the process stable(i.e., in control)? explain.

sample... 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
number of errors.... 5 3 5 7 4 6 8 4 5 9 3 4 5 6 6 7

Reference no: EM13128226

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