dolution

Waiting in Line A quality-control manager at an amusement park feels that the amount of time that people spend waiting in line for the American Eagle roller coaster is too long. To determine if a new loading/unloading procedure is effective in reducing wait time in line, he measures the amount of time (in minutes) people are waiting in line for seven days. After implementing the new procedure, he again measures the amount of time (in minutes) people are waiting in line for seven days and obtains the data on the next page. To make a reasonable comparison, he chooses days when weather conditions are alike.
Treat each day as a block and the wait times before and after the procedure as the treatment.

(a) Using the methods introduced in this section, determine whether there is sufficient evidence to conclude that the two loading procedures are resulting in different measurements of the wait time at the  level of significance.

(b) Using the methods introduced in Section 11.2, determine whether there is sufficient evidence to conclude that the two loading procedures are resulting in different measurements of the wait time at the  level of significance.

(c) Compare the -values of both approaches. Can you conclude that the method presented in this section is a generalization of the matched-pairs -test?