Answer: The test statistic to test the claim is .
Step-by-step explanation:
Let be the standard deviation of filled bottles.
As per given , we have
To fins test statistic , we use Chi -square test for population standard deviation:
, where n= sample size .
s= sample standard deviation.
We are given that , n= 20 and s= 0.11
Then,
Hence, the test statistic to test the claim is .