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

question 27

Multiple Choice

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, which of the following best describes the Type II error?

• A) The president concludes that the mean SAT score of the entering students is lower than previous years when it is indeed not lower.
• B) The president concludes that the mean SAT score of the entering students is higher than previous years when it is indeed not higher.
• C) The president concludes that the mean SAT score of the entering students is not lower than previous years when it is indeed lower.
• D) The president concludes that the mean SAT score of the entering students is not higher than previous years when it is indeed higher.

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Definitions:

Sensitive Periods

Specific times in an individual's development during which they are more responsive to certain types of environmental stimuli or learning.

Critical Periods

Specific times during organism development when the organism is particularly susceptible to certain environmental stimuli or experiences.

Scientific Method

The process of posing and answering questions using careful, controlled techniques that include systematic, orderly observation and the collection of data.

Bioecological Approach

A theoretical model that emphasizes the importance of both biological and environmental factors in the development of human beings, highlighting the dynamic interactions between them.