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.

Question

Quizplus · Accepted Answer

The sample is not randomly selected from the entire student population, as it only includes students from one parking lot, which may not be representative of all students.

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