The Registrar's Office at State University Would Like to Determine

question 66

Multiple Choice

The registrar's office at State University would like to determine a 95% confidence interval for the mean commute time of its students. A member of the staff randomly chooses a parking lot and surveys the first 125 students who park in the chosen lot on a given day. The confidence interval is

• A) not meaningful because of the lack of random sampling.
• B) meaningful because the sample size exceeds 30 and the Central Limit Theorem ensures normality of the sampling distribution of the sample mean.
• C) not meaningful because the sampling distribution of the sample mean is not normal.
• D) meaningful because the sample is representative of the population.

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