1. The manager at a Savings and Loan company is interested in determining whether there is a difference in mean time that customers spend completing their transactions depending on which of the four tellers they use. To conduct the test, the manager has selected simple random samples of 15 customers for each of the tellers and has timed them (in seconds) from the moment they start their transaction to the time the transaction is completed and they leave the teller station. The manager then asked one of her assistants to perform the appropriate statistical analysis. The right analysis to be performed by the assistant is:
   1. **A one factor ANOVA.
   2. A two factor ANOVA.
   3. Simple regression analysis.
   4. Chi-square test of independence (or association).
   5. None of the above answers is correct.