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

question 24

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, the highest level of significance at which the null hypothesis cannot be rejected is ________.

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Definitions:

Trachea

The part of the respiratory tract between the larynx and the bronchial tree that is tubular and made of rings of cartilage and smooth muscle; also called the windpipe.

Vocal Cords

Elastic bands of muscle tissue in the larynx involved in producing sound through their vibration as air passes through.

Larynx

The voice box; an organ located in the neck responsible for producing sound.

Bronchi

The main air passages into the lungs, branching from the trachea and allowing air to flow in and out of the lungs.