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

question 119

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 president can conclude that there is sufficient evidence to show that the mean SAT score of the entering class this year is lower than previous years with no more than a 5% probability of incorrectly rejecting the true null hypothesis.

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Definitions:

Biologically Based

Pertains to characteristics or processes that are rooted in biological factors, including genetic, neurological, or physiological origins.

Looking-Glass Self

The concept that individuals develop self-images based on how they believe others perceive them.

Worse than Average Effect

The cognitive bias where individuals undervalue their own qualities and abilities in comparison to others.

Social Comparison Theory

A theory positing that individuals determine their own social and personal worth based on how they stack up against others.