Question Completion status: QUESTION 3 3.125 points Use the following setup for questions 3-7: An airline institutes a "snake system" waiting line at its counters to try to reduce the average waiting time. The mean waiting time under specific conditions with the previous system was 6.1 minutes. A sample of 16 waiting lines is taken; the times are measured at widely separated times to eliminate the possibility of dependent observations. The resulting sample mean is 5.4 and the standard deviation is 1.3. Construct a test to determine whether the "snake system" waiting line is effective using a = 0.05. Assume that the population of waiting times is approximately normal. Which of the following tests should be used? O a. large-sample z-test about a population mean O b. small-sample t-test about a population mean O c. paired t-test O d. large-sample z-test about population proportion me All Answers to save all answers* Question Completion Status: QUESTION 4 3.125 points Which of the following are the correct null and alternative hypotheses for the test? O a. H : # 6.1 vs. H :H >6.1 Ob. H H=6.1 vs. H : # 6.1 OCH =6.1 vs. H :(>6.1 Od.H =6.1 v. H :