Sales data collected from Lowes sale of driveway solar lights from the past 90 days has been compiled as follows: (rounded to the nearest 10). Units Sold Number of Times

0 3 10 6 20 9 30 13 40 24 50 27 60 8

a. Determine the relative frequency for each number of units sold.

b. Suppose that the following random numbers were obtained using Excel: 0.46, 0.09, 0.92, 0.29, 0.93, 0.58, 0.69, 0.65, 0.28, 0.51 Use these random numbers to simulate 10 days of sales.