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

question 89

Short Answer

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, for a test with a level of significance of 0.05, the critical value would be ________.

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Definitions:

Sales Mix

The composition of different products or services sold by a business, affecting overall sales volume, revenue, and profit margins.

Special Order

An order for goods or services that is unusual or not standard, often requiring a unique setup or production process.

Fixed Overhead

Regular, ongoing costs associated with operating a business that are not directly tied to production levels, such as rent and salaries.

Manufacturing Cost

The total expense incurred in the production of goods, including raw materials, labor, and overhead costs.