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

question 43

Multiple Choice

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,the population of interest is

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

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Definitions:

Horizontal Gene Transfer

The swapping of genetic material in single or multiple-celled organisms through mechanisms that bypass the "vertical" passing down of DNA from ancestor to descendant.

Phylogenetic Species Concept

A concept in biology that defines a species based on the smallest group of individuals that share a common ancestor, representing one branch on the tree of life.

Adaptation

The process by which a species becomes better suited to its environment through the development of physical, behavioral, or physiological changes.

Bacterial Species

Groups of bacteria that share certain diagnostic traits and genetic similarities, differing significantly from other bacterial groups.