Imagine that you oversee quality control for a production line in a candy company. The production line is responsible for filling 12 ounces of candy in packages labeled with weight of 12 oz. Package...

Quality control in Candy production company
1. Based on your research, identify the acceptable weight range tolerance for the candy packages (i.e. plus or minus 1 ounce). Support your decision with credible sources.
Production line produces large quantity of candy in company. Therefore, law of large number is applicable making distribution of finished products symmetric and normal. Adequate sampling will ensure that sampling mean will be reflective of population parameters. Sample of more than 100 would be ideal.
Now for ideal acceptable weight tolerance range, we use confidence interval which provides range of values based on sample. Use of this technique is supported by paper titled as “Generalized confidence intervals for assessing process capability of multiple production lines” published by Chien-Wei Won, Ming-Hung Shu, Feng-Tsung Cheng (2008). Acceptable confidence interval per unit of production is within range of ±1 with quantity of filling 12 ounce per unit. This makes acceptable range of 13-14 ounce.
Putting above discussion together, following formula is used for confidence interval;


2. Explain in detail quality control process in mind.
Technological advances have made is very easy for measuring weight in production units. Sensor based artificial intelligence enables checking level of ounce filled in bottle. This data is collected automatically with system design and stored in cloud. Thereby, data is...