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 on 7 days. After implementing the new procedure, he again measures the amount of time (in minutes) people are waiting in line on 7 days and obtains the following data. To make a reasonable comparison, he chooses days when the weather conditions are similar.

Is the new loading/unloading procedure effective in reducing wait time at the α = 0.05 level of significance?

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Day: Mon (2 PM.) Wed (2P.M.) Thurs (2 PM.) Fri (2 P.M.) ues (2 P.M.) Wait time before, X Wait time after, Y Day: 11.6 25.9 20.0 38.2 57.3 10.7 28.3 19.2 35.9 59.2 Sat Sat in un (11 A.M (4 P.M.) (12 noon) (4 P.M.) Wait time before, X, Wait time after, Y, 32.1 81.8 57.1 62.8 31.8 75.3 54.9 62.0