2.2

A production line operation is designed to ll cartons with laundry detergent to a mean weight of 128 ounces. A sample of cartons is periodically selected and weighed to determine whether under-filling or overfilling is occurring. If the sample data lead to a conclusion of under-filling or overlling, the production line will be shut down and adjusted to obtain proper lling. (a) Formulate the null and alternative hypotheses that will help in deciding whether to shut down and adjust the production line. 0 H0:u=128 Ha:u>128 H :ua 128 O 0 Ha:y128 O H0:p=128 Ha:u:128 H ru=128 O l] Ha:u