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

question 78

True/False

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, the consumer group can conclude that there is enough evidence to prove that the manufacturer's claim is not true when allowing for a 5% probability of committing a type I error.

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Definitions:

Open

Available or accessible, not closed or restricted; in a context of information or communication, it implies transparency and receptiveness to ideas.

Heterogeneous

Consisting of diverse or varied components, elements, or individuals, often referring to mixtures or groups with different characteristics.

Working Stage

A phase in therapy or group work where participants are actively engaged in addressing and resolving their issues.

Group Therapy

A form of psychotherapy that involves one or more therapists treating a small group of clients together, providing support and insight from multiple perspectives.