Question
A machine fills 12 ounce bottles with soda. For the machine to function properly, the standard deviation of the sample must be less than or equal to 0.02 ounce. A sample of 8 bottles is selected, and the number of ounces of soda in each bottle is given. At alpha +0.05, can you reject the claim that the machine is functioning properly? data is 12.06 12.02 11.98 12.05 12.04 12.09 11.99 12.04
Answers
The standard deviation of the sample is 0.03, which is greater than 0.02. Therefore, you can reject the claim that the machine is functioning properly at alpha +0.05.