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

question 110

True/False

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,for this test to be valid,it is necessary that the power consumption for microwave ovens has a normal distribution.

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Definitions:

Price and Demand

An economic principle stating that the demand for a product inversely varies with its price; as the price increases, demand usually decreases.

Specific Period

A distinct length of time with a defined beginning and end, often referenced in contracts, projects, or historical contexts.

Relationship

Pertains to the connections and interactions between a business and its customers, aiming to foster loyalty and long-term engagement.

Demand Curve

A graph that illustrates the relationship between the price of a good or service and the quantity demanded by consumers.