The Manager of a Grocery Store Wants to Determine Whether

Multiple Choice

The manager of a grocery store wants to determine whether the amount of water contained in a 1L bottle purchased from a known manufacturer actually averages to 1L. It is known from the manufacturer's specifications that the standard deviation of the amount of water is equal to 0.02L. A random sample of 32 bottles is selected, and the mean amount of water per 1L bottle is found to be 0.995L.
-The test statistic is _____.

A) -2.83
B) -1.41
C) -2.00
D) 2.83
E) 1.41