A production line operation is designed to fill cartons with laundry detergent to a mean weight of 32 ounces. A sample of cartons is periodically selected and weighed to determine whether underfilling or overfilling is occurring. If a hypothesis test is conducted and it is found that z value is 2.33, at the 1% significance level, what should be the conclusion?

10 points

1.It cannot be concluded that the production line is faulty.

2.The production line has to be replaced.

3.There is not enough information to reach a conclusion.

4.None of the above