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

question 15

Multiple Choice

TABLE 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 Table 9-3, the population of interest is

• A) the power consumption in the 20 microwave ovens.
• B) the power consumption in all such microwave ovens.
• C) the mean power consumption in the 20 microwave ovens.
• D) the mean power consumption in all such microwave ovens.

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Definitions:

Medium Status

A position or level that is in the middle of a hierarchy or ranking system, neither high nor low.

Group Norms

The shared expectations and rules that guide behavior of people within social groups.

Conform

To align behaviors, attitudes, or beliefs with those of a group, often to fit in or comply with norms.

Break Norms

The act of violating established social rules, standards, or expectations in a particular context.