Solutions Operations management

A machine set to fill a bottle with 60.0 grams of liquid was started at 7:00 a.m. today. Slight vari

Question: A machine set to fill a bottle with 60.0 grams of liquid was started at 7:00 a.m. today. Slight variations (called chance variation or sampling fluctuation) were expected. The quality control inspector made her initial check of the weights at 8:00 a.m. She selected a five bottles from the first hour of production and weighed the contents of each bottle. The results of the first seven inspections follow;

Time	1	2	3	4	5
8 a.m.	60.0	59.9	60.0	60.0	60.1
9 a.m.	60.0	60.2	60.1	60.2	60.0
10 a.m.	60.1	60.1	60.0	59.8	60.0
11 a.m.	60.0	59.8	60.0	60.0	60.2
12 noon	60.2	60.0	59.8	60.1	59.8
1 p.m.	60.3	60.1	59.9	60.1	59.8
2 p.m.	60.1	59.8	59.7	59.9	59.8