An English Teacher Has Been Teaching a Sixth Grade Composition

question 75

Multiple Choice

An English teacher has been teaching a sixth grade composition class for many years. He has the feeling that over the past several years, the writing ability of students has changed. A national test of proficiency in composition was administered 5 years ago. The resulting distribution of scores was normally shaped, had a mean of 85 and a standard deviation of 10.9. In order to test his feeling, he gives his present class of 43 students the same proficiency test. The resulting mean is 80 and the standard deviation is 8.7. The obtained value of the appropriate statistic for testing H 0 is _________.

• A) z obt = - 0.46
• B) z obt = +3.01
• C) z obt = - 3.01
• D) z obt = - 0.45

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Definitions:

Meeting Technologies

Digital tools and platforms used to facilitate virtual or in-person meetings, enhancing communication and collaboration.

Virtual Teams

Groups of people who work together from different geographical locations via the internet.

Virtual Meetings

Online gatherings where participants use video, audio, and text to communicate and collaborate in real-time over the internet.

Planning

The process of making detailed proposals or strategies for achieving specific goals or completing tasks.