Boxes of Honey-Nut Oatmeal are produced to contain 15.0 ounces, with a standard deviation of 0.15 ounce. For a sample size of 49, the 3-sigma x overbar chart control limits are: a. What is the Upper control limit ?

b. What is the Lower control limit?

A.  Upper control limit = 15.06

B.  Lower coontrol limit= -14.93

Explanation:

Total content in the box, μ = 15

Sample, n = 49

Standard deviation, σ = 0.15

A. Upper control limit = μ+Aσ

                                    = μ+ σ

                                    = 15+ ×0.15

                                    = 15.06

B Lower Control Limit = μ-Aσ

                                     = μ· σ

                                     = 15-× 0.15

                                     = -14.93

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