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

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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 lowest level of significance at which the null hypothesis can still be rejected is ________.


Definitions:

Level Of Happiness

A subjective assessment or measure of a person's feelings of well-being or joy, often on a scale.

Skill Level

A measure of competence or proficiency in a specific area or activity.

Response Variable

The primary variable of interest in a study or experiment that is measured to assess the effects of certain changes or differences in one or more explanatory variables.

Regression Analysis

A set of statistical processes for estimating the relationships among variables, specifically one dependent variable and one or more independent variables.

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