Question: A production process sampled 24 times with a sample size of 6 yields an overall mean of 25.2 and an average range of 0.8. Calculate

A production process sampled 24 times with a sample size of 6 yields an overall mean of 25.2 and an average range of 0.8. Calculate the lower control limit for the mean based on 3 standard deviations.

a. 24.8

b. Cannot be determined with the information given

c. 25.6

d. 25.1

e. 22.8

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