Tomato sauce is packaged in a bottle designed to hold a nominal 16 oz of product. Eight samples of 4 bottles were randomly inspected. The results are listed in the following table.
Sample Measurement Mean Standard Deviation
1 16.2 15.8 16.3 16.5
2 16.3 16.2 16.1 15.7
3 15.6 16.4 16 16.2
4 16.7 16.2 16 16.4
5 16.2 16.5 16.6 15.8
6 16.6 16 15.8 15.9
7 16.1 15.7 15.9 16.3
8 15.7 16.6 15.8 16.2
a) Calculate the sample means and standard deviations.
b) Calculate the control limits for-chart s-chart. What can you say about this process?
c) Estimate the population mean and standard deviation.
d) Estimate what percentage of products from the current process will meet the specification