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

question 163

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 257.3 W using a 0.10 level of significance?

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Definitions:

Appointment

A scheduled meeting or arrangement, especially professional or social, at a specific time and place.

Time

The indefinite continued progress of existence and events in the past, present, and future regarded as a whole.

Scheduled Appointment

An arranged meeting or commitment entered into a calendar or planner, often with reminders set to notify participants.

Period

A length or portion of time, often defined by specific start and end dates.