TABLE 9-9 The President of a University Claimed That the Entering Class

question 74

True/False

TABLE 9-9
The president of a university claimed that the entering class this year appeared to be larger than the entering class from previous years but their mean SAT score is lower than previous years. He took a sample of 20 of this year's entering students and found that their mean SAT score is 1,501 with a standard deviation of 53. The university's record indicates that the mean SAT score for entering students from previous years is 1,520. He wants to find out if his claim is supported by the evidence at a 5% level of significance.
-Referring to Table 9-9, the evidence proves beyond a doubt that the mean SAT score of the entering class this year is lower than previous years.

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Definitions:

Supply

the total amount of a specific good or service that is available to consumers.

Inferior Good

A type of good for which demand decreases as the income of the individual increases, inversely related to income.

Normal Good

A good for which demand increases as the income of the consumer increases, reflecting a direct relationship between income and demand.

Income Increases

A rise in the amount of money earned by individuals or households, often measured on an annual basis.