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

question 19

Short Answer

TABLE 9-3
An appliance manufacturer claims to have developed a compact microwave oven that consumes an average of no more than 250 W. From previous studies, it is believed that power consumption for microwave ovens is normally distributed with a 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 an average of 257.3 W.
-Referring to Table 9-3, what is the power of the test if the average power consumption of all such microwave ovens is in fact 248 W using a 0.05 level of significance?

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Definitions:

Revocation

In general, the recalling or voiding of a prior action. In contract law, the withdrawal of an offer by the offeror prior to effective acceptance by the offeree.

Dispatched

The act of sending someone or something off to a destination or for a specific purpose, often related to the delivery of goods or services.

Power To Revoke

The legal authority to cancel or withdraw a decision, offer, or agreement.

Promises

Declarations or assurances that one will do something or that a particular thing will happen.