Using SAS, make a random sample on Sales 3 distribution from the data in Figure 5.1. Using the software, determine four items from the data set for sampling purposes. Which specific values should be selected from the data set?

OBS	Sales 1	Sales 2	Sales 3	Sales 4
1	23	1234	1	1
2	31	943	2	5
3	48	986	3	9
4	16	12	4	12
5	28	15	5	18
6	29	15	6	19
7	31	23		19
8	35	21	6	21
9	51	25	6	21
10	42	27	7	21
11	34	27	8	21
12	56	29	9	21
13	24	20	10	21
14	34	18	11	19
15	43	13	12	19
16	56	8	13	18
17	34	7	14	12
18	38	6	15	9
19	23	4	16	5
20	27	1	17	1