Posted by sunil on Friday, October 29, 2010 at 7:04am.
wscvhy
A packaging device is set to fill detergent power packets with a mean weight of 5 Kg. The standard deviation is known to be 0.01 Kg. These are known to drift upwards over a period of time due to machine fault, which is not tolerable. A random sample of 100 packets is taken and weighed. This sample has a mean weight of 5.03 Kg and a standard deviation of 0.21 Kg. Can we calculate that the mean weight produced by the machine has increased? Use 5% level of significance.
Related Questions
Statistics - A packaging device is set to fill detergent power packets with a ...
marketing research - A packaging device is set to fill detergent power packets ...
statistics - Machines are used to pack sugar into packets supposedly containing ...
Statistics - Machines are used to pack sugar into packets supposedly containing ...
statistics/probability - QUESTION- machines are used to pack sugar into packets ...
SMU - Ans:- Machines are used to pack sugar into packets supposedly containing 1...
Statistics - The amount of fill(weight of contents)put into a glass jar of ...
statistics - 2 Packets of crisps from a production line have a weight ...
science - 3. In a sample of 64 students given an examination in statistics, it ...
statistics - a manufacturer of detergent claims that the contents of the boxes ...
For Further Reading
