Determine three-sigma control limits

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Given the following data for the number of defects per spool of cable.

OBSERVATION

Observation: 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Number of defects: 2 3 1 0 1 3 2 0 2 1 3 1 2 0

Determine three-sigma control limits using the above data (Do not round intermediate calculations.)

UCL=

LCL=

Reference no: EM131276858

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