The accompanying table shows the wait times (minutes) from six rides located in three different Walt Disney World theme parks. Wait times were reported by Disney and wait times at 10 AM and 5 PM were recorded on 50 different days (five rows are shown in the accompanying table). Use the 10 AM wait times for Space Mountain, Rock 'n' Roller Coaster , Tower of Terror, and Flight of Passage. Use a 0.05 significance level to test the claim that the four rides have the same mean wait time at 10 AM.

SPACE SPACE SMALL SMALL ROCK N ROCK N TOWER TOWER FLIGHT FLIGHT NAVI NAVI

MT MT WORLD WORLD ROLLER ROLLER TERROR TERROR PASSAGE PASSAGE RIVER RIVER

10 AM 5 PM 10 AM 5 PM 10 AM 5 PM 10 AM 5 PM 10 AM 5 PM 10 AM 5 PM

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110 105 15 65 180 105 80 85 225 170 120 95

40 55 5 5 65 50 20 25 150 65 70 40

50 110 10 45 60 45 95 55 180 115 60 75

55 55 15 50 30 25 30 15 120 120 80 50

45 65 10 25 50 45 30 35 150 75 80 70

Determine the null hypothesis.