Problem 1. Bags of pretzels are sampled to ensure proper weight. The overall average for the samples is 9 ounces. Each sample contains 25 bags. The standard deviation is estimated to be 3 ounces. With a 99.7% confidence interval, develop a control chart with upper and lower control limits. Briefly discuss your findings.
2 .The inspection of cans of juice involves sampling some cans and weighing them. The overall average for the samples is 39 ounces. Each sample contains 36 cans. The standard deviation is estimated to be 2 ounces. With a 99.7% confidence interval, develop a control chart with upper and lower control limits. Briefly discuss your findings.