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

question 12

Essay

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 p-value of the test is ________.

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Definitions:

Unit Selling Price

The price for which a single unit of a product is sold, not including any additional fees or charges.

Fixed Costs

Expenses that do not change in response to the level of goods or services produced by the business, such as rent or salaries.

Operating Income

Represents the amount of profit realized from a business's operations, after deducting operating expenses such as wages, depreciation, and cost of goods sold from gross revenue.

Unit Selling Price

The price at which a single unit of a product is sold to customers.