Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. The table gives a car dealer’s weekly sales for a random sample of 26 weeks. Week Cars Sold 1 1 2 1 3 4 4 2 5 4 6 10 7 8 8 5 9 9 10 6 11 2 12 5 13 6 14 5 15 7 16 1 17 4 18 6 19 8 20 9 21 2 22 5 23 9 24 5 25 3 26 3 The sample mean of cars sold per week is .