A local group claims that the police issue more than 60 speeding tickets a day in their area. To prove their point, they randomly select two weeks and count the number of tickets issued each day. Their research yields the data are shown below: 70 48 61 68 69 55 70 57 60 83 52 60 72 58 Use this sample data to test the group's claim at a significance level of a = 0.02.