Instruction 9-3 An Appliance Manufacturer Claims to Have Developed a Compact Microwave

question 109

Short Answer

Instruction 9-3
An appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W. From previous studies, it is believed that power consumption for microwave ovens is normally distributed with a population standard deviation of 15 W. A consumer group has decided to try to discover if the claim appears true. They take a sample of 20 microwave ovens and find that they consume a mean of 257.3 W.
-Referring to Instruction 9-3,what is the power of the test if the mean power consumption of all such microwave ovens is in fact 248 W using a 0.05 level of significance?

---

Definitions:

Birth Control Devices

Tools or methods used to prevent pregnancy, including condoms, intrauterine devices (IUDs), and birth control pills.

State Law

The body of law enacted by the legislative bodies of individual states within the United States, pertaining to the matters within a state's jurisdiction.

Eighth Amendment

Part of the Bill of Rights that prohibits the federal government from imposing excessive bail, excessive fines, or cruel and unusual punishment.

Cruel and Unusual Punishment

A legal doctrine that prohibits inhumane or excessively disproportionate sentences for crimes, as outlined in the Eighth Amendment of the U.S. Constitution.