Question: Sampling 9 boxes per every hour for the past 12 hours has produced the following results: (a) Calculate the average mean of 12 samples (Sample

Sampling 9 boxes per every hour for the past 12 hours has produced the following results:

(a) Calculate the average mean of 12 samples (Sample size=9). Show all your work.

(b) Develop X chart. It is assuming that =1ounce and Z=3. Determine UCL and LCL. Show all your work. Hint: Sample size=9.

**no table needed..

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