To determine whether traffic levels differ between the morning and evening rush hours, a traffic engineer counted the number of cars passing through a certain intersection during five-minute periods in both the morning and evening for 10 days. The results were as follows.

Can you conclude that the median traffic level differs between morning and evening? Use the α = 0.01 level of significance.

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Day 1 2 3 4 5 6 7 8 9 10 Morning 65 68 44 64 Evening 70 51 59 49 63 38 36 55 78 47 63 50 59 83 81 25