An appliance manufacturer claims to have developed a compact microwave oven that

Question

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 Which of the following is the population of interest? O A. the mean power consumption in all such microwave ovens O B. the power consumption in the 20 microwave ovens ° C. the power consumption in all such microwave ovens 0 D, the mean power consumption in the 20 microwave ovens

Explanation / Answer

Population will include all such microwaves manufactured.

Answer: Option C. the power consumption in all such microwave ovens

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