Question
An appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 260 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 265 W. The population of interest is
the power consumption in the 20 microwave ovens.
the power consumption in all such microwave ovens.
the mean power consumption in the 20 microwave ovens.
the mean power consumption in all such microwave ovens.
the power consumption in the 20 microwave ovens.
the power consumption in all such microwave ovens.
the mean power consumption in the 20 microwave ovens.
the mean power consumption in all such microwave ovens.
Answers
GPT-4o mini
The population of interest in this scenario is:
**the mean power consumption in all such microwave ovens.**
This is because the consumer group is evaluating the manufacturer's claim about the mean power consumption for the entire population of microwave ovens, not just the sample they tested. They are trying to determine if the mean power consumption for all such microwave ovens is 260 W or not.
**the mean power consumption in all such microwave ovens.**
This is because the consumer group is evaluating the manufacturer's claim about the mean power consumption for the entire population of microwave ovens, not just the sample they tested. They are trying to determine if the mean power consumption for all such microwave ovens is 260 W or not.