A Random Sample of 250 Students at a University Finds

question 39

Multiple Choice

A random sample of 250 students at a university finds that these students take a mean of 14.3 credit hours per quarter with a standard deviation of 1.7 credit hours. The 95% confidence interval for the mean is 14.3 ± 0.211. Interpret the interval.

• A) The probability that a student takes 14.089 to 14.511 credit hours in a quarter is 0.95.
• B) 95% of the students take between 14.089 to 14.511 credit hours per quarter.
• C) We are 95% confident that the average number of credit hours per quarter of the sampled students falls in the interval 14.089 to 14.511 hours.
• D) We are 95% confident that the average number of credit hours per quarter of students at the university falls in the interval 14.089 to 14.511 hours.

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Definitions:

Experimental Control

A method used in scientific studies to minimize the influence of variables other than the one being studied, ensuring the results are due to the variable of interest.

Narrative Research

A qualitative research method focused on understanding and interpreting stories or experiences of individuals to gain insights into human behavior and societies.

Restorying

A narrative therapy technique where individuals reinterpret their life stories to bring about positive psychological change.

Ecological Validity

The extent to which the findings of a research study are able to be generalized to real-life settings.