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

question 6

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

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Definitions:

Checking Accounts

These are types of bank accounts that allow for both deposits and withdrawals, commonly used for everyday transactions.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how spread out the values are from the mean.

Daily Temperatures

Data points representing the temperature measurements taken each day over a given period.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true.