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

question 78

True/False

TABLE 9-3
An appliance manufacturer claims to have developed a compact microwave oven that consumes an average of no more than 250 W. From previous studies, it is believed that power consumption for microwave ovens is normally distributed with a 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 an average of 257.3 W.
-Referring to Table 9-3, the consumer group can conclude that there is enough evidence to prove that the manufacturer's claim is not true when allowing for a 5% probability of committing a type I error.

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Definitions:

MPC

The marginal propensity to consume, which represents the proportion of an increase in income that gets spent on consumption.

Government Spending

Expenditures by government entities on goods and services, including infrastructure, public services, and social welfare programs.

GDP

Totaling the market value of all final goods and services produced inside a country within a set period results in the Gross Domestic Product.

Inflations

The speed at which the overall price level of goods and services increases, leading to a decrease in buying power.