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

question 115

Short Answer

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, state the null hypothesis for this study.

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Definitions:

Meteoric Water

Water originating from precipitation, including rain, snow, or hail, that infiltrates the Earth's surface.

Large Magma Chambers

Underground pools of molten rock that feed volcanoes and can store huge volumes of magma beneath the Earth's surface.

Partially Crystallized

A state in which a substance has begun to form a crystalline structure but has not fully completed the process.

Chamber's Rock Walls

The solid, often vertical, rock faces forming the sides of geological chambers or cavities.